Do Low Revs Cause Engine Damage? Short Term & Long Term

[@sporadic3684]

"Suck, Squeeze, Bang, and Blow" - Conquer Driving

[@sectorgamma]

The infamous four *_stroke_* cycle.

[@Imabird4real]

He couldn't have used worse words.

[@kyranthez927]

​@@Imabird4realThey are the official words for a four stroke cycle

[@Nooklez]

I go through a 4 stroke cycle​@@sectorgamma

[@QuickndirectMarketing1]

😅

[@endriti7]

Hey, richard i just got my driver license in serbia. I want to say thank you for your videos it really helps a lot keep it up.

[@milosmilosavljevic2288]

Legenda, i meni je mnogo pomogao

[@JoeMcK10000000000000]

@@milosmilosavljevic2288 @endriti7 Congrats both. What are the roads and other drivers like in Serbia?

[@endriti7]

​@@milosmilosavljevic2288 Hvala druže za komentaru. Ja sam albanac živim u srbiji. Pozdrav i poštovanje za tebe . Zašto jer neki srbi i albanci ne poštuju jedni druge. Pozz.

[@nickhoughton7025]

@@endriti7 People are just people.

[@ywtv6]

Hvaka čast brat ❤

[@poluki]

you explain things in such an excellent and simple way without using any crazy vocabulary so that anyone can understand. thank you!

[@Captain-Cardboard]

0:33 _"I'm telling you, baby, that's not mine!"_

[@melgrant7404]

It's not my bag baby .

[@HowdyYT]

And what about this book?

[@abdulwakil2613]

THANK YOU for this video Richard. it’s amazing that while your main focus is on being a driving instructor you branch off into these topics that are still very relevant and important to being a driver. Hats off!

[@carsgonewrong746]

Suck, Squeeze, Bang, Blow - works every time

[@aperson5994]

How old are you.

[@mosty85]

@aperson5994 Suck, squeeze, bang, and blow are the four steps of a four-stroke internal combustion engine

[@Bannerlordfor]

​@aperson5994 how old are you?

[@dmo8343]

Yaay, my new favourite youtuber just posted! God bless you for doing so much to try and keep roads safe by educating us! I am from Bulgaria so I can't visit your course but I have watched many of your videos and have found them engaging and helpful. Also I think you're a great actor.

[@xxspeedyxx]

“Suck squeeze bang blow” 😂 helpful video as always

[@LouisLouieSZ4]

My 10-year-old diesel car (which I bought 1.5 years ago as a learner driver) recently suffered from carbon buildup and a nearly failing EGR valve, so this video is very useful to me. Agreed the point one can't really change where they work or the places they regularly visit. I wish I had been told this earlier as a first-time car owner, so I could have chosen a car that better suits my needs. I also don't have the money to replace my car, so I can only afford minimal repairs and maintenance. Anyway, I still love my car and plan to use it for at least another 3-4 years after I fix the major problems. Thank you, Richard, for this brilliant video. It’s easy to understand and helps me remember the SSBB four-stroke cycle.

[@douglasreid699]

i am not sure if your car has a DPF on it or its old enough to not have one, but if the EGR valve is cloggin up, the DPF may be about to clog up too. its best to read the hand book for the vehicle on how to clean it but having spent £500 and me lying under my van in november to replace it but found it to be the vaporiser and a fuse that was really the problem, i did learn to keep a DPF clean, or even if its not got a DPF and to break down and burn some of the carbon, usually it requires being over 40mph and above 2000rpm. a lot of owners dont know this and have problems i have found. you can also have the DPF cleaned with a cleaner to give it a little bit longer life but most mechanics said to me its better to change it. its worth reading up on the common faults of your vehicle and planning ahead for them to possibly go wrong, find out why they go wrong and possibly change your driving style to help avoid the problem. as much as a diesel engine saves fuel on long runs, it clogs more often from short runs. i used to drive in a way to save fuel a lot, now i tend not to unless on long journeys as its more likely to clog the engine at low speed and make fuel saving worse.

[@Keatoil]

This could be a whole top-gear level show 🔥

[@majoorann4629]

Hey Richard, just want to say thanks for all the amazing clutch control videos, just learned to drive with my dad for the first time and your videos really helped me learn it quick.

[@haroldm4600]

That was a very clear and concise explanation, thank you!

[@lolep7871]

Your way of explaining and picking apart everything in a simple and easy-to-understand manner is masterful. Good job.

[@RealTrueBeast]

I'm in Ireland, passed my drivers test first try on Friday I was watching your videos during the days leading up to it, helped a ton, so thank you for everything!

[@davem9204]

Good stuff, and good to see your car has done such a high mileage by keeping it well maintained. Much better for the environment than buying a new car every couple of years. Apart from having the occasionally Italian tune-up to clear out the engine, it also important to avoid lots of very short journeys where the engine doesn't get warm. You mentioned the issue of lack of oil supply at low revs, and a common area for engines that are often laboured is the big-end end bearings wear out. This is both due to lack of oil supply as well as for crank forces being more uneven at low-revs under load. I've been a passenger in a few cars where you can hear the engine's bottom end rattling, and the driver is the sort to drive everywhere in 4th gear and wondering why it doesn't accelerate or get up hills. Minicab drivers being the main culprits of this!

[@UnH1ng3d]

The pressure and load explanation was excellent, especially comparing to riding a bike up hill in different gears.

[@somerandomguywastaken]

This is why you're my favourite driving related creator. The normal driving instructors on yt are copy paste mock test snd basic test passing videos. But you go into every topic to do with all driving, regardless of whether its got anything to do with the test. It's clear driving isn't just a job for you, especially the mx5😉

[@adamek9750]

still the best driving channel on youtube

[@Lee_yourboylee]

I like the way you explain things, you care about making it accessible and understandable for your audience. I found this very interesting and helpful and I feel more empowered with this knowledge. Thank you.

[@rjds1800]

Every day is a school day, spot on video 👍

[@jindre7547]

“I even did an experiment, and made a video all about it” is the most Richard Fandersesque sentence ever uttered

[@davidgriffin79]

A good explanation of the mechanical advantage of the gears to increase angular velocity (of the flywheel) and reduce torque. The analogy of the bike is spot on: when going up a hill on a bike, the lower the gear the higher the rate of rotation of the chainwheel (the pedals) and less force required to push the pedals, the higher the gear the lower the rate of rotation and greater force required to push the pedals.

[@lanehogger1532]

I totally agree with everything you said. I have a BMW 520d and it suits 30000 miles a year as a drummers workhorse. Lots of fast motorway driving to keep the dpf etc happy.

[@mdSaddam-he7og]

Your channel help me got my license very fast. thanks....i think you're the best instructor in the world.

[@SuperBarca1991]

Thank you. I passed today. Your videos have helped me a lot to improve my driving skills. Thanks again.

[@olliepace0829]

This is interesting to know, I’m starting my lessons in March and I’m really excited - this will be good to know given I’m driving a manual!

[@panther9450]

Evening rich almost forgot it was Monday 😂

[@reykoranteng9089]

Greay video as always! To the point of the gear suggestion indicator that is present in most modern manual cars, I think it can't be overstated (as you said) that it doesn't know and sometimes is straight up wrong so you should primarily *listen to the engine*. I drive a turbo 1 liter 3-cylinder (certified Europe moment) and the suggestion is to shift from 3rd to 5th or even 6th when going 50 (km/h) at ~2000 RPM, but I'm pretty sure that would just make the engine lug soooo bad given that there are "empty" crank angles between each power stroke (30 ° to be precise).

[@zamf]

I liked that "How long is a piece of string" reference :)

[@AhoBakaSaru]

I’ve just realised what your videos remind me of. Top Gear, but back in the 80’s when it actually dealt with cars and practical driving and wasn’t a vaguely humorous talk show based around cars. Anyway, once again, thanks for the awesome content Richard 😊

[@steve5772]

Great work, really well explained. I'm probably bit older than the target audience, I've put a few engines together in my lifetime, and I still got some new knowledge out of this. The only thing I would possibly add is, particularly on diesels, trying to accelerate too low in gear is going to produce a lot of torque, which will stretch timing chains and belts.

[@leenevin8451]

I modified my 1.9tdi VW. It’ll never die it’s a unicorn 😊

[@Grafyte]

You can design an engine to do what you want reliably, and it'll do it. But, if you operate anything outside it's designed parameters, it will suffer or fail. The 2nd and 3rd generation Toyota Tacomas with the 2TR-FE is a very interesting case study. That engine came in 2005 and was virtually unchanged for it's entire 19 year run to 2023. No one knows how to work on the 2TR-FE because they just don't die. AMD from the Car Care Nut Channel had 1 (one) such engine come in because it was beat up as a plow truck, a small 4 cylinder doing the job normally done by a larger V8 engine. These engines are designed to be operated at near full throttle basically continuously. If you push the gas pedal down 20% of the way, the engine computer tells the actual throttle valve to open 70-80% of the way. It's so noticeable, people who drive the 2TR-FE and the 2GR-FSE Tacomas back to back will tell you that the 4 cylinder is actually more lively in the city because of how dramatically overboosted the throttle is. And here's the other thing. Whether you get the 5 speed manual, or the 4 or 6 speed auto, the 2TR-FE revs low. Like, _low_ low. It will comfortably do 1400 rpm at 50mph in 6th gear with the 6 speed, 1800 at 50mph in 5th with the 5 speed, or 1600 at 50mph in 4th with the 4 speed. It's a sight to behold.

[@Torchedini]

if you want ridiculous revs, I have 2ar-fse in my car. It likes to do 1100 to 1200 rpm at 60 mph at times. its a cvt box so it decides for itself. But that is hybrid so it gets by with electric assist on high torque requirements. Funny thing also that when you ask for power it does maximum revs constantly which is a really weird experience.

[@ladalout245]

My daughter bought a petrol Renault Captur 0.9 TCE from my brother in law a few years ago, 30 odd thousand miles , same owner from new, well maintained, well driven, not too many short journeys but brother in law always changed up a gear as soon as possible and when the change indicator advised. No sooner had she bought it and it developed a misfire when cold and stuttering at other times. Had nothing to lose so I took it for a decent run and thrashed it, took it to the red line over and over for the first time in its life and hey presto, started running better, pulling better, misfire gone. Told my daughter to allow it to rev freely when driving it at operating temperature and now it's done about 60k miles without a single issue, never missed a beat! I think that says it all really, I don't think they're engineered to be lugged at low revs, I think the manufacturers have been forced down that path to justify published emissions data and reduce emissions generally but in many cases it's doing more harm than good, unfortunately.

[@-aid4084]

from what I've found out just from researching and watching, the more engine load, the more wear is dealt to the engine. so while cold, an engine doesn't like high load, and that'll rincrease wear. high rpm also isn't great while cold, because the rings, pistons and walls of the cylinder aren't at the right tolerances and that can damage the engine.

[@DoubleMannings]

I watched a lot of your videos and managed to pass the driving test. Really much appreciated!

[@ConquerDriving]

That's fantastic news! Thank you for watching and congratulations on passing!

[@Adam_Lyskawa]

I drive an almost 18 years old diesel on short distances. They said it's completely mismatched for the task, however, not the slightest problems with the engine for 2 years straight. Thing that I do notice is bad fuel economy when I make only short distances, and way better economy when I make a longer trip. I notice 2 things - of course starting up and accelerating from zero takes the most fuel, but also my diesel takes way more fuel when cold. For now DPF (with very high mileage on it) is fine. BTW, even with "bad fuel economy" - it's still cheaper drive than a gasoline car (of that class of course, modern cars have better fuel economy, but the repairs cost more than negates it).

[@DennisM168]

Using the gear indicator really depends on the car though. I remember my old car telling me to upshift, making the revs land a tiny bit over 1k rpm. On a cold engine, in the winter. Going by ear is always a good piece of advice though, you can really hear your car struggling when accelerating from low revs, especially on higher gears. For learners: Hearing the engine struggle means hearing more engine noise, while the revs are barely rising. Also, you can feel the car vibrating alot more. Try to avoid that

[@averyalexander2303]

Very nice explanation! There's another aspect of why lugging can cause poor lubrication that's unrelated to oil pressure. In very simple terms, the bearings ride on a very thin film of oil with no metal to metal contact. However, the thickness of the oil film is determined by the ratio of shaft speed to load (among other things), so at lower RPMs, for the same force pushing on the bearings (load), the oil film will be thinner than at a somewhat higher RPM assuming everything else will be the same, so more chance of metal to metal contact. However, that theory is more applicable to the lower part of the RPM range because the inertial forces from the pistons changing directions often exceeds the forces from compression/combustion at higher RPMs, so if the RPM is taken too high, the film thickness starts to decrease again.

[@SebastianTomescu]

I keep my engine at 1500 to 2000 rpm. From what I've heard this is a healthy amount of revs.

[@Paul-qj4dr]

I'm actually wondering what he means with low revs. Is it 1500-2000, or is he talking about even lower (~900-1500 almost stationaire revs)?

[@Stanjara]

That's low and economical. Go normal from 2k-3k

[@menacegaming8212]

It depends on car. My petrol car is comfortable at 1200-1350 rpm. You should see at what rpm your car is struggling to cruise, then you should stay a little above that range , that way you get best gas mileage.

[@danc.9554]

It depends on the car and the situation. If it's not a semi truck with a 10+ liter diesel, it's probably advisable to keep the revs above 2k when climbing hills. Actually, at more like 3k or more if it's a petrol even when you're not in a hurry. If you are in a hurry, feel free to use the rev gauge all the way once your engine is properly warmed up (not only the coolant but also the oil, for which you need at least a couple more miles just to be on the safe side) - you paid for the whole thing after all.

[@Stanjara]

@ 🤦‍♂💀

[@moonsapling]

As someone who drives a diesel daily, I absolutely need to give it some from time to time to avoid carbon buildup. It will also vibrate my teeth out if I shift at low RPM lol.

[@Grahamvfr]

Great explanation Richard, and may i add for clarity, that even at low revs (relatively) your engine is spinning like mad thing. Just watch your washing machine spinning at 1,000 revs 😳

[@jackedrussell]

I always thought the expression "horses for courses" was about eating Tesco burgers for dinner.

[@stuctr]

Yes and also damages engine mounts and other driveline items

[@sgttoxiiczz]

Just handed in my 2 week notice at work now that I'm a fully qualified mechanic. 😂 Always find it intereting how engines work. Thanks 😊

[@ConquerDriving]

😂

[@CatsForLife21]

Thanks for the information! Keep up the great work. #OneMessageFoundation

[@kapu3746]

the gear shift indicator be only telling me to gear up when rolling down hill, as if I wanted to speed up

[@davidpickard9393]

HGVs tend to run at 1000 rpm. The design of the engine makes most difference to best rpm range.

[@ConquerDriving]

Very true. I think big ships are about 50rpm.

[@__Who-am-i__]

0:33 hey dad, can I borrow your thing? I need to make a video!

[@bGzzzzz]

“This is a fluid extractor”….. I have that, but I call it something different 😂

[@lunga.06]

Low rpm is bad Drive fast. Thank you Richard

[@shandyvtec]

You missed some information revelant to torque output over rpm's while explainning low and high loads but you're pretty much lower details to keep up it more simple for most of who watching it. Belt driven water pumps don't just go with engine speed, they're simple dependand on engine speed (slight diffrence in size ratio between crank and water pump pulley). Engine oil pump even on low engine rpms has enough oil pressure as long as no damaged or dilluted oil. I'm watching your every technical video so keep creating them often, specially more car test like fuel consumption tests.

[@ConquerDriving]

Yes, the coolant pump and oil pump will be a ratio of the speed of the engine. I meant they speed up and slow down with the engine. I also said "energy created" which of course our current understanding is that energy can neither be created or destroyed. I'm surprised I've not seen someone mention that yet.

[@pauljones5620]

I just passed in no small part thanks to you. You should have a link where the people you've helped can send you £££.

[@nax1807]

can you make some more comedy style videos where you do over exaggerated reactions or impersonations? you have a natural mr bean charisma about you and it's excellent.

[@ConquerDriving]

Thank you. If an appropriate idea comes to mind I may well do.

[@nax1807]

your impersonatino of a petrol engine juddering after being driven in a gear too high is a good example of this.

[@velikimedved8589]

thanks man

[@user-xu5vl5th9n]

The worst case is flooring it in high gear at low revs.

[@BCdgz]

Thanks for the video. But 18 minutes for a yes or no answer?!

[@philcrawford325]

Whether it's driving or anything else, when someone thinks they have a way of doing something that seems to be a considerable improvement over the usual way, there are always disadvantages that counter the benefits. Moderation is always the wisest way. Kind of boring , though.

[@arya_amg]

The problem with high cylinder pressure in low RPMs is piston slap when a piston rocks back and forth within its cylinder and that causes excessive wear on piston and cylinder Thats the sound of "struggle" in the engine In boosted engines LSPI is also a big problem and that can destroy the engine quickly

[@Stanjara]

Only when the engine is cold.

[@antonycharnock2993]

Living in Sheffield something I've discovered is three cylinder TSI engines don't like hills. I have to go down a gear from what the car is recommending.

[@WeAreTheUnhappyMajority]

I changed gear at 2000 rpms and settle at 1500 rpms at a cruise, none of my car had problems. If the engine is too cold I tend to keep the engine at 2000 rpms until the car prompts me to change gear. My turbo comes on at 1500 rpms and at times at slower speeds at lower revs my Act is activated.

[@Blackrims23]

You should always drive on high rpm here and there

[@inyobill]

It depends.

[@0bzen22]

'The engineers should have thought about it'. -> wet timing belts.

[@twinkieerella]

More parts money for the manufacturer The engineers did the job what the manufacturers wanted

[@artemkatelnytskyi]

"Suck, sqeeze, bang, blow". I hate what the internet has done to me.

[@Clarityinlife335]

2:02 wow

[@luksproject7142]

what about Italian tune up method

[@aperson5994]

He has a video that mentions this. Search for is the redline bad

[@MankiranKamaal]

Richard can you do a video on how to know if the car’s bumper is turned 180 degrees when reverse parking it in the parking lot ?

[@enoruel]

Hey, Richard. Big fan of your videos! You mentioned before that you don't believe that premium fuel makes a difference. Is that for diesel as well as petrol? I noticed today the premium diesel was nearly the same price as regular. I thought i might give it a go as i have heard other's mention it is a good idea for high mileage diesel engines. Do you think it helps with longevity?

[@ConquerDriving]

I don't know enough about diesel fuel to comment. But with petrol, premium may not be as good as not as many people use it so it can be older. Old fuel is not good. I recommend buying fuel from a place that sells a lot of it.

[@Stanjara]

Yes it does. As the EuroDiesel doesn't have sulfur... premium actually adds a bit more lubricity additives, and it burns a lot cleaner than regular one. My two eco tests, one with regular and another with premium show significant difference. You don't have to use it all the time...here and there.

[@kibik]

1.8 tsi, around 7000 rpm is cut, my practice is, on cold engine trying to not cross 3000 rpm, when engine is on temperature i will maintan 2500-3500 rpm, my mechanik says its look factory new (i have 300k km on it)

[@Stanjara]

Finaly someone

[@kibik]

​@@Stanjara i think thats good but what do you mean xD

[@Stanjara]

@ I drive mine the same and that's the proper way to drive. My mechanic is stunned as well.

[@99solutionsit10]

I drive manual, is petrol. Sometimes when the road is flat, indicates to up-shift at 1400rpm. Due to the gearbox ratios that might be idle for the upper speed. 😂 It's a Skoda.

[@CalmSitar-sw5wf]

Awesome! Thank you. Just one question. When I come to a turn or a speed bump and I put it in second gear I try not to put it in first because the car will start jerking so I keep it in second. Maybe 10 or miles an hour. I noticed that it takes a couple of seconds for it to grip and start moving again. Is that a problem? 2025 BMW thx!!

[@ConquerDriving]

If second gear is too high for the current speed then it will put more wear on the clutch. But 10mph is usually fast enough for 2nd gear in most cars.

[@Torchedini]

No, as long as the car is in motion it should have enough torque to accelerate it in 2nd gear. The jerking is caused by the car having so much power (to the wheels in first gear) that minimal movements of the gas pedal result in fast acceleration. Then you lift off and the car jerks backwards because of the fast decelleration. Best to use first gear only for starting to go from a standstill. This is also why when you drive on snow it is easier to drive in second gear. With lower torque at the wheel in second gear it is easier to keep grip in the snow. Where in first gear you have so much power that you spin instantly.

[@CalmSitar-sw5wf]

@ thank you!

[@CalmSitar-sw5wf]

@ ah got it. Thank you!

[@CalmSitar-sw5wf]

@ thank you!

[@TRBNoah]

Great video 😊

[@poormansmichaelbay]

Does modifying the exhaust (like cutting mufflers) have an impact on engine damage?

[@ConquerDriving]

May damage your ears.

[@stardust1533]

Back pressure will be minimised.

[@MrBluePoochyena]

​​@@stardust1533and back pressure in many cases is harmful for performance. What you want is proper scavenging not backpressure, 2 different things that people mix under the same false term of back pressure, as in higher back pressure = better scavenging 😂

[@RUBBER_BULLET]

From what I understand, new drivers are taught to keep it in as high a gear as possible, without the engine struggling. Does this not mean that the engine spends much of its time on the verge of struggling? Is that bad for the engine?

[@brianp7022]

For what you will save on fuel (not a huge amount) I wouldn't drive in high gears too early - especially uphill.. Too much torque causes damage no question

[@YesiPleb]

Ah, you mention PETROL engines. I have a diesel engine. I'll catch the next video.

[@johnbooth5199]

In general, a hard working diesel, is a happy diesel. Diesels are best for longer runs, where they can get good and hot. A diesel used for short trips, or at low load for most of the time, will clog-up with carbon. It's why so many people in the USA have problems with their 7L v8 pickups, when they mainly use them around town. They "fix" the problem, by ripping out all the emission controls. They simply aren't working such a large engine hard enough, regularly enough.

[@johnbooth5199]

@@YesiPleb It's a particular problem for large diesel engines, used in generators and the like. They need to run at least at 50% load. If you run a diesel lightly loaded it clogs-up. In the case of a genset, it then will struggle to deliver high power. Someone who works on small engines, had a 5 Kw diesel generator, that had been used to run a few lights and laptops. It was unreliable, so was scrapped. All it took, after an inspection, was to let it warm-up, and then run it at full load for half an hour. It belched smoke, then ran clean - fixed!

[@gtp_vexd3507]

Hi Richard, can you do a vid on seatbelts seeing as apparently 43% of teenagers are dying from not wearing them. 👍🏽

[@trippy_boxer_dog2170]

can you recommend the company that do your DPF cleaning?

[@ConquerDriving]

I've never had a DPF cleaned.

[@abdulwakil2613]

@@ConquerDriving I think he meant your intake valves

[@ConquerDriving]

I get my intake valves cleaned at dukes park automotive in Chelmsford.

[@LostCoffeeCup]

My gf is a 4 stroke engine?! 2:00

[@233kosta]

Low's fine... but not too low. If it's under load, let it rev. Then upshift when you're cruising.

[@san7h0sh]

What's the name of that injection like thing he holds?

[@ChrisNeary86]

In the thumbnail? The word is syringe 💉

[@send2gl]

My Kia Picanto auto changes up far too early, particularly uphill. I generally use manual override when moving off uphill In my younger days I used to fit a vacuum gauge which was great to see what was going on in the engine.

[@Ale-bj7nd]

All the times a youtuber says "look at the video there" and indicates something, I cant see anything. But maybe is the KZbin app of my TV.

[@ConquerDriving]

I don't think it works when watching on TV.

[@joecawte9878]

Hi Richard, I drive an automatic petrol and when using cruise control and going up a hill, the gearbox will often drop itself into a lower gear and jump to higher revs to try to keep the cruise control speed. I sometimes override this, going back up a gear (and to lower revs) even if the speed starts dropping. Is this particularly damaging to either the engine and/or gearbox?

[@Stanjara]

That's bad... bicycle reference. Try to start peddling in 13th gear. Let the engine go down a gear. Jesus Christ.

[@stiffybeanie4148]

​@@StanjaraBro is lugging an automatic😂😂😂

[@iwillnoteatzebugs]

damage no, carbon build up, yes. sometimes it s good to push your car to the rev limiter

[@MrBluePoochyena]

1 redline a day keeps the maintenance hell away 😜. Though it's better to do that only 5-10 mins after your coolant temps gone up to where it should sit, as getting oil temp to the proper range is more important

[@Hunter-NG]

What is more fuel efficient? Driving at high revs in a low gear with minimal accelerator application OR low revs high gear with max accelerator application?

[@cmdraljaz77]

Low revs and high throttle usually results in better fuel economy. But it's not good for the engine so just drive normally. do things like accelerate more gently, coast to bleed off speed instead of constantly accelerating then breaking....

[@Hunter-NG]

@cmdraljaz77 I do lift and cost and I do not drive to the point of braking. My point is, is it more efficient to change down a gear to accerate or to stay in a higher gear but this means pressing the accelerator further down. I don't care about speed of acceleration.

[@cmdraljaz77]

@@Hunter-NG staying in higher gear is more efficient, but if you hear the engine struggling, shift down to a lower gear. Depends on your engine at what revs and load. But you can generally tell by the sound

[@ConquerDriving]

Higher revs with less throttle puts less strain on the engine. As long as the revs aren't too high.

[@Grafyte]

Neither. There's a sweet spot in between and it's different for every car and every situation.

[@timax4114]

While warming up your engine in cold weather, is it better to drive in 3rd gear at around 2300 rpm or in 4th gear at around 1800 rpm?

[@ConquerDriving]

Depends on the car/engine. Try to use the gear that requires the smallest amount of throttle and make sure the engine doesn't feel laboured.

[@leenevin8451]

Depends how much gas pedal you’re using. Like going uphill

[@Stanjara]

It's better in 3rd 2300. It will be easier on the engine (less torque) and it will worm up the engine faster. You want to be out of that cold engine period asap. Also, don't go above 2500 on the cold engine.

[@drazengordon288]

@@Stanjaraif you don’t mind answering.. I have a hill I need to climb about 1km away from the house. Not really far enough to reach optimal engine temp, and climbing it under 2500rpm is probably lugging the engine a little. Any suggestions for what’s best in this case?

[@menacegaming8212]

​@@drazengordon288depends on your car. If your car isn't lugging, you can go lower rpm. Next time, try to see at what rpm your engine lugs at hill. Then you should keep around 500 rpm above that on hills.

[@ParcoLee]

Suck, Squeeze, Bang, and Blow..... have almost put my head into a gutter. 🤣🤣🤣 Low revs problem is even more serious in a hybrid car as its engine doesn't always work as much as trad. cars. I found I gotta use Redex cleaner more often to keep my fuel efficiency from drop. Now I almost apply Redex in my every tank of fuel. There was a time I drove to Hull last year and had used me up 80% of my tank. A bottle of Redex applied right before my next trip to Hull and only 50% of my tank is used this time. 30% of my 40L tank = 12L of my fuel saved in the same distance and same speed. And I could just press much less gas to maintain my same speed so I felt my right foot was easier. Now I just don't drive without Redex especially in the winter here. Can't imagine driving without that cleaner when the temperature drops below 0 and massive condensation formed inside my engine.

[@carsgonewrong746]

I have a question, does low engine revs wear the fuel injectors in any way? In the past few years ive had 2 of them go and they are very expensive to replace. I've learnt to drive using very low revs (1-1.3k) in my diesel, and i often accelerate in very low revs (change gear at 2k) so want to make sure it isnt bad for the car.

[@ConquerDriving]

I don't see how it would wear the injectors.

[@carsgonewrong746]

@@ConquerDriving cool thanks, that's good to know

[@MangosArtClub]

Low revs would probably be better for fuel injectors since it's going through less injection cycles. Maybe try using fuel system/injector cleaner every now and then, it may be clogging causing an issue.

[@beans9647]

While it's probably fine in most cases when not taken to an extreme of never going above a couple thousand RPM... I'm going to absolutely give 'er hell at least a few times per week, you know, just to be safe of course.

[@john1703]

"Bang" does mechanical work on the crank-shaft. It does not create energy. The energy starts in the fuel and is converted to heat and pressure. Energy can be neither created nor destroyed. Sorry, just fundamental physics.

[@LordAlucar01]

as much as I dislike electric cars I still believe if the current roads keep doing what they do by forcing stoping each 50m and gas prices go up to a point where it isn;'t worth it im sure that is the best path in city

[@johnflavin1602]

I laugh at my car when it tells me to change gear. Ain’t no way I’m labouring the engine just to save fuel.

[@Rampage1Rules]

Would be great to see you get a stage 1 tune on your car and test the economy ive heard you can get better MPG if driven correctly

[@ConquerDriving]

I've kept it standard for longevity.

[@miscellaneousz2681]

@@ConquerDrivingmaybe time to get a project car 😮😮😮

[@dr4g_sho7]

2025!!! Let's go!!!!

[@rosegold-beats]

if you want clean valves just use water injection

[@frankwong9486]

1L 3 pot turbo engin( likely high compression ratio also)in low rev vs new generation 1.2 NA high compression ratio engine need jigh rev to pull Which one work harder 😮?

[@ConquerDriving]

It depends on the torque output, but likely the turbo engine will be under more pressure.

[@cyrilelanjithara6284]

1.5 speed 👍

[@bernardcarthy2365]

Do not do a Google search for suck, squeeze, bang, blow on your work computer