How Oil Pressure Works - EricTheCarGuy

How Oil Pressure Works - EricTheCarGuy
www.ericthecarguy.com/
Here is the second offering from last weeks set of videos. The most important thing to note with this is that oil pressure is not created by the pump but rather the resistance to the outlet flow of that pump and part of that resistance is the clearances between the bearings and the other parts inside the engine. If nothing else I hope you are entertained, enjoy!
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ETCG
Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.

[@robeaumont82]

It's taken me months to find a proper understandable explanation of how oil pressure works and this guy did just that! Top work.

[@risctakr]

I have worked on cars, trucks and motorcycles for years. Not as a mechanic, but because I owned it, or helping a friend. I am by no measure a mechanic. I just wanted to say I really appreciate your videos, because I have learned why things do or are the way they are, not just how you replace it. You have taught me how to replace it, what it does, why it does, and how it affects the whole system. Thank you very much for sharing your knowledge.

[@christophermcgovern5036]

It’s nice for someone to show real appreciation for what these people do on KZbin

[@della6143]

Thanks Christopher I listen to the video about ten times now going over it slowly ..really enjoyed the learnings and understanding more about how oil pressure is generated

[@BetterOff735]

Thanks Eric for your experience and time you put in to make these videos. Its helping me to learn enough to do my own repairs. I'm an Artist/ Entertainer...and I am NOT a mechanic. But in just the past few months, I have learned to replace a water pump, remove my air intake and replace spark plugs ( I have a Mazda Tribute 3.0) Now, I am looking at replacing the Valve Cover Gaskets because I have an oil leak, and have seen some oil on the engine, on bottom of oil pan AND in the Spark plug wells. All these challenges have given me a new found "growing" confidence that "I CAN do it"... Thanks to people like you who teach and help with videos. Thanks Bud! Steve

[@ahmedhamoda2995]

i just respect you man, i've learnt a lot from you, i don't know how to say it right, just thank you thank you very much for everything, a very useful and very much helpful information

[@andiarrohnds5163]

u are the best internet dad ever ;_;

[@snappytom1013]

Hey Eric. I have an anomaly that appears to be unique. I have a 2001 Jeep Grand Cherokee WJ Laredo. 4.0 liter 6 with 182k. I tested the oil pressure with a gauge tester. Cold it went to 50 psi falling to 9 psi as it warmed over therapy minutes. I have replaced the sending unit, oil pump with stock milling pump, and went to 20w 40 full synthetic. When warm it will still drop to about 10 psi at idle unless I run the AC to raise the idle. But if I shut it down for even two minutes when warm, the pump will loose prime and I need to give it a quick rev and it comes back up to 40-50 psi while driving. Engine is tight and otherwise runs great. No rod knock or lifter tic. And the previous owner had new pump installed in November.

[@WiPri0371]

@snappytom1013. My 4L I6 Jeep Wrangler developed something like that but not quite that bad. Engine oil just wasn't lasting for 3k miles. I had to change it much sooner. I couldn't figure it out at first. Until I paid attention to design. They had designed the thing with the exhaust wrapping around the oil pan on 3 sides, all within 2 inches of the pan itself. The oil never stood a chance. There was no heat shielding to combat it. (There was also no support at the collector connection of exhaust pipe, but that's a story of idiocy for another time). I toyed with the idea of an oil cooler, but ruled out out. I don't remember why (I haven't had/seen the thing for at least 10 years now. Got rid of it). What I did do was wrap the exhaust pipe near the pan. It helped, but was ultimately a bandaid. Wrapping doesn't last. It ended up finally costing me a lifter. I parked it and drove my truck until I could fix it. But my mom beat me to the punch. She paid no attention to her gauges and let the car overheat from water loss till the engine was severely damaged. I let her drive mine reluctantly but not without sternly saying she needed to get hers fixed fast cause mine was vulnerable. Two months later, I'm picking her up again from the side of the road where mine died. She no closer to getting hers fixed and there were no options left. She took a taxi to work. I pulled the valve cover off mine. Looked like freaking glitter everywhere. I wasn't mad. I passed that point in a hurry. I was done with it by then. Sold it.

[@binzsta86]

That's why I cal him Daddy. ;)

[@ranilwickramasinghe1234]

Andiar Rohnds thank you so much for valuable information

[@Kman7607]

Just amazing explanation. I appreciate how you explain things but manage to not make me feel dumb in the process. This is a talent that not everyone has and it makes watching your videos very enjoyable. Keep up the great work!

[@Peter-od7op]

Hi great vdo is there a pressure relief valve on car engines. I work on plans and they have a ball under spring pressure to adjust oil pressure.

[@doraspigelmire9063]

I have been a car guy for 40 plus years and you make the most sense of anyone I have listened to.

[@pgrens]

Excellent, Eric. One of the things I like best about your videos is that you do your best to cover the basic concepts instead of always diving straight into the minutia of details specific to certain cars or manufacturers. Next beer's on me!

[@TheCeki1982]

Eric is cool and explains things on a relaxed way.

[@noxious89123]

+1. When elevating a fluid, gravity is the resistance. Some cars have an oil pressure relief valve, sometimes controlled by a spring, which will open and release some of the pressure if it get's too high. If this valve fails, it will let the oil straight through without any resistance, and thus you lose oil pressure.

[@rotimisoboyejo6747]

Eric. I like the way you break everything down to the basics. I've learnt a lot from this video. You've saved me a lot on this. Thanks

[@solutionrecruiter7130]

best channel for automotive repairs ive seen... thanks

[@efraintowers3789]

Damn ! Called us all out on the "let me stop talking and show you" Your the Man Eric

[@excelquestcorp]

Excellent vid explaining theory. As a construction company owner I often try to explain things to the guys so they understand why things are done not just how to do them. Thanks for taking the time to explain.

[@Igivegoodhair]

Knowledgeable and presented well- good job! Thanks Eric!

[@viper_guy]

Finally! Thanks for a fantastic explanation. I am having a motor rebuilt right now and I can actually understand what the mechanic has told me. Keep up this great channel.

[@andreysim]

Shout out to EricTheCarGuy, Andrey here. First of all, LOVE what you do. Thank you so much for being informative on all the your videos (questions asked) and giving practical options that are (of course time tested) in the zone of INTREST.

[@jerseyjoe8637]

Thanks Eric I just installed a new oil pump in my 95 ram 1500 and was disappointed to see the oil pressure was between 30 and 40, but your explanation says it all. You're the best 👍BTW I have over 212,500 miles on it.

[@galsan76]

Excellent ways of explanation and very understanding using a very professional language and skills. Thank you so much for all of this hard work for the community in helping out with our mechanical needs and troubles. Greatly appreciate your kindness and love hearing you educating us. Sincerely Eddie

[@ImaginosStudios]

A quick tip.. if you have a gauge instead of a light, like Eric said low readings will indicate wear, however high readings can be a sign you need to change the oil as it it tends to thicken over its life, thick oil will make higher pressure, but overall will be less flow. Which means some of the more distant parts wont get lubricated.

[@kessiahyoung2365]

Eric, you are a natural teacher. I love your videos!

[@BatBrakesBones]

Thank you, Eric. This is what I was looking for. You are doing a great thing.

[@stack9866]

Eric, you really are an awesome teacher! Love your videos, man.

[@snapautomotive80]

Thank you Eric I have tried over and over again to replace the oil pump due to the low pressure gauge of the engine oil and now I have benefited from this information. Thank you

[@louisgordnier2269]

Once again, Eric explains it great. Thanks for the info man. Old video, but still worth the watch!

[@dabarboza51]

Eric is pretty much correct!!! You can have a massive pump pumping out hundreds of gallons per minute...or more!! But if there's almost no resistance, if there is nothing to put pressure against it, then there is little pressure!! A pump is used to create flow... Any restriction creates pressure. Yes, you need a pump to create volume and resistance to create pressure

[@paulwalker2267]

pretty much correct ? Da Barboza

[@tacoswamper]

Dude, these videos are so interesting and informative. Thank you

[@dneitzke]

hey Eric, once again I give you a THANK YOU! , One of the great things I like about you is that your not afraid to say,that "your not sure about that" which in my book speaks volumes of your credibility, Way too many" know it all's" loaded on the net. been working on cars awhile now and completely lost track of the oil pressure scenario. And yes I am guilty of replacing a oil pump on a engine with wasted main bearings. Here is a trick, if you barley here a knock and you suspect a rod bearing, pull the vehicle perpendicular to a curb, drop it in gear with a warmed up engine and give her some throttle if a rod. or engine bearing is in suspect, it will definintely make it's presence audibly known. slightly risky,but if present,ya got big problems anyway. Stay the course, and be well !

[@petermontanez2339]

Eric thank you for the leaning experience that i have received, iam sure a lot of people share the same view, what gets me the most is how you explain when and why i know not every one has the same understanding on how things work and thats ok but i kow to be that when a person with annoying situation is looking for the best results it makes more sense to handle the problem at hand,ive been watching your videos for some time know and i like to say keep up the fantastic work thanks,

[@allianceofsteel]

Also in my experience I've found that type of oil can seriously change your oil pressure readings. I tried out royal purple synthetic oil and my oil pressure dropped to half what it is normally, the engine also made noise like it was low on oil, so I parked and swapped out for my usual Rotella T oil and wix filter, back up to 50psi around 60 before warm up, huddles around 45 all the time. Excellent explanation in the video. The engine in question is a 360 Dodge 1977 motorhome, so I have to be careful which oil I put in it. I've read that certain newer oils won't protect your older engines and eat the camshafts out of them in just thousands of miles.

[@HighestRank]

Synthetic oil requires a different filter material. See pureoil.com

[@lowkeygneiss7432]

Yes! That's what Eric the car guy said also

[@willdon987]

Good stuff very informative . LOOK FORWARD TO YOUR VIDEOS .

[@user-bk9ls7cx8v]

One of the absolute best DIY car repair channels on the Internet! This channel is my new goto!

[@khalidmkhan]

Great to meet you too. Thanks for sharing. I learned a bunch!

[@tsimms561]

Eric thank you for this knowledge!!!

[@johngalv9288]

Good video, Eric. / always learn something from your videos. thanks for sharing your knowledge.

[@searchingthesound8488]

Got a '94 302 just lost all pressure today, dash gauge been actin funny for months, with good oil. My mechanic told me it was the main bearings. Used your video to learn a lil bit b4 diving into a new motor. Thanks. You totally backed him.

[@markrankin3297]

Eric, Thanks so much for your time, I hope your channel is doing well for you financially.

[@kylelab333221]

Thankyou Eric, a really good insight on how the oil system works. I certainly learned something!

[@The_Truth777]

Best explanation ever regarding oil pressure! Congratulations Eric 🙌🏾

[@juniqueblaauw9268]

Hi Erick how free should engine turn by hand with new bigend bearings

[@jaycarson9709]

Simply stated, well explained, excellent comparative - visual example ( garden hose ) excellent video. You are a natural teacher. The world turns - continues to function - because of guys like you. Thanks.

[@troyarchuleta2833]

Hey man thanks for posting all these videos. I literally know nothing about cars and have already learned from your videos. keep them coming and thank you again!

[@akabigo135]

Thanks. This video was very helpful. I'm keeping a keen eye on my oil gauge.

[@Howmachineworks]

Tks for that video, good job.

[@moparkid440]

Eric the Car Guy.. ALWAYS explaining things in simplest terms so that most people can understand. Hey ETCG. Not sure if you looked into it, buy after you reitire from being a tech, Auto Instructor sounds like the perfect job for you....Awesome channel

[@guitarguyjoefry]

You were the first guy I ever looked up on KZbin and you're sill the first go to guy every time. I wish you the best life can offer. Thanks for all the help. I just replaced the thermostat and on my test drive the oil pressure gauge was on the higher side. It was a quart low so I added too much but the gauge looked more normal just past the halfway mark. By the time I got home the gauge was all the way to the right High mark? I've had low pressure and had to add oil before but never had high pressure and had to add oil before. I've had this old 94 Ford pickup since it was one year old. It's been a great truck 265,000 miles still strong. Merry Christmas!

[@onlylexus]

Love your helpful video's Eric. Can you do one where you show us how to do an engine compression test on a diesel engine, I know you have done one with a petrol engine, but I know a diesel test is different? How about it? Respects and thank you from Scotland UK.

[@smiley00341]

Great Job Sir!!!

[@darrylcampbell4411]

Thanks Eric . You made it all so clear to me.You explain everything so simply. Well done. Cheers.

[@israelsanchez9371]

Thanks Eric, you make the best videos about fixing cars on KZbin

[@dominicpaolelli8210]

i knew none of this and ive been into cars for years, great video, great info

[@123yoagan]

as always, thanks Eric!!

[@joshcohen6475]

Dude your videos are amazing. I learn something everytime i watch one. Youve helped me totally rebuild my 97 dodge ram 318. Thank you brotha for all your hardwork and effort. Amazing information. Wrenchin is fun for me..

[@Illsky9]

thanks for clarifying things for me, enjoy your videos and there always helpful. thanks for taking the time to make these videos!!

[@oldchevysonthefoothills694]

Great video Eric, I learned something. I here stories all the time about people replacing oil pumps and still not having pressure.

[@paulfoo7397]

Thanks a lot, Eric from 9 years ago!

[@seanjohntwild]

Great explanation.... always enjoy watching your videos

[@outlawtour]

loved this video thanks Eric for all you do!

[@ralphlucero7511]

Holy, i just learned somthing today thanks my man!

[@evodog2300]

Also how to spell something lol

[@robbielangley8523]

This was a very informative video! My 2002 4.3 S10 (181,000 miles) has been having issues with low oil pressure (especially at idle) and was wondering if a new pump would have resolved it. Now I realize it might be due to engine wear (luckily the engine is not knocking or making noises). May have to go to higher viscosity oil to counteract the loss of pressure.

[@HighestRank]

Or it might really just be the pump.

[@erickc348]

this guy seriously needs his own show on spike or something, so informative! Great videos Eric!!

[@OscarMartinez-gg9bj]

you are the best! your videos helped me get my Integra running like a champ. id be calling dial a ride every morning if it weren't for your videos! so many things i didnt know and now i do. thank you sir.

[@jmjdeist]

make a video on how to replace these bearings please!

[@InuKun2008]

Good old Bernouli's Principle.

[@paulc2787]

Thanks Eric...You're my hero of the month. This video makes perfect sense. It's not the oil pump. It's the oil in the system that creates pressure. Glad I didn't listen to my mechanic, he said I needed a new oil pump ($1400). I had him replace my 2005 Tahoe with high mileage oil and the pressure is back to normal 30 to 40 psi.

[@darealblair3262]

Glad and relieved to hear the difference of what creates the pressure..

[@iHelmster]

Hey Eric could you do a video about motor knocks, because there is a cool little toyota corolla sr5 i want to by, but the guy said it has a motor knock and it is under powered i dont want to buy another car because this car is in my price range. Help?

[@chrismcdaniel8464]

I have a 94 4x4 ext cab no oil pressure will go up soon as I crank it to normal then gradually go down to almost 10 to 20 psi. iv change the oil pressure sending unit under the distributor. and it wouldnt didnt work. so I'm thinking the oil pump mabe. if anyone could help please let me know

[@nullall3607]

In physics terminology: P=F/A (I.e. Pressure is force divided by area) So technically the pump creates force that based on the various clearances (which shows up as the A= area in the formula) ends up bringing different pressure levels based on level of wear in the engine parts/ clearances. Of course a worn pump makes less force which does result in loss of pressure as well. So obviously you can have perfect clearances like in a brand new engine but a failing or worn oil pump and still have low pressure.

[@mikebowles6890]

How to install the Pistons in a 302 Ford

[@ladimafx9918]

Correct brother... mechanical engineering teaches us all that. He can't say we should forget the oil pump. There are sequences that needs to be followed in fault finding... you can't just jump up and down like a cockroach...

[@BernardBerdon]

Excellent thought sir. Much obliged.

[@ronnieguado3416]

the pump pressure produce when ristrictid

[@Plasma216]

Thank-you Eric the car guy from Yukon, Canada, doing a 2006 volvo s60 2.5t , and you helped me learn, respect.., low oil pressure and trouble shooted.... it was the cam seal, oil pump seal and the oil intake was clogged, used sea foam... and changed such, volvos suck..., respect

[@mypony7310]

This is a really good explanation. During your time off i hope you consider making vids like these. Well put!

[@jimbuford4147]

Eric, I understand what you are saying but how does the oil pressure interact with the gauge to produce a reading? Thanks

[@jmbpinto73]

+Jim Buford When you have a gauge, it is connected to the outlet of the pump reading the pressure at that point. At idle, pump is working slowly, and pressure must be enough to move the oil around, at higher rpm, the volume of pumped oil should be more than enough to give maximum pressure reads. Most cars have only a red light, it is on when the pressure falls below a certain minimum value. (like when the engine is turned on or off). When that light flashes while driving, turn off immediately, and check the oil level. In case there is oil in the engine call road assistance and don't turn the engine on again.

[@jimbuford4147]

+José Pinto Thanks Jose. It is clearer now.

[@graham7513]

The fluid dynamic principle at play here is called the Venturi Effect, just fwiw...

[@bertsimpsan]

No it isnt

[@festushengombe6576]

Halo Eric, i am from Africa Namibia, i don't know how to say it right, just thank you thank you very much for everything, a very useful and very much helpful information. Excellent, Eric. One of the things I like best about your videos is that you do your best to cover the basic concepts instead of always diving straight into the minutia of details specific to certain cars or manufacturers.

[@vizcat]

Eric, subscribed! Well thought out and executed video. I'm a fan.

[@fy25song]

hey eric. i have a 2005 crown victoria with 370,000 miles on it. what viscosity of engine should i use ? ford says i should use 5w-20 but i have quiet a bit of miles. should i use a higher viscosity or stick to 5w-20 ?

[@ericryderup1755]

+Saber Uddin Keep using 5w-20 or check if Ford updated their recommendation. He says in another video to use the same as manufacturer recommends.

[@philp8168]

Ford hasn't changed their recommendation when it comes to the viscosity of oil they use. they still use 5w20 motor oil. but being how your engine has so many miles as stated in his video he talks about as the clearance is get bigger you lose oil pressure. ideally if you were to use a thicker viscosity oil you should get your oil pressure better probably not 100%. but if you're not having problems with oil pressure I would just stick with the same viscosity.

[@thomasburns2557]

370,000 miles. On 5w-20. Sounds like your car is doing well. The most important thing your oil does is prevent wear. Everything else it does is secondary. 540rat has a blog where he tests different oils for their ability to prevent wear. Look it up.. Yes adding 20w-50 might make it " sound better" but the engine will then wear quicker.

[@thomasburns2557]

+bep2001 kumar The purpose of oil is to prevent wear. Going to thicker oil is only a deception. May "sound" better but may actually accelerate wear. The real pressure in your car that prevents wear is hydrodynamic pressure. This pressure is in the thousands of pounds per square inch. It is created by motion of the surfaces coated with oil not by your oil pump.

[@philp8168]

Thomas Burns oh your very correct. But ideally putting a thicker oil maybe would increase oil pressure but yes oil pressure is made by the outlet of the pump and your crankshaft journals etc.

[@Cpt935]

There are some wrong information in this video. The example with the garden hose seems to be true but it is not. if you reduce the area of the hose, according to the Bernoulli principle, the speed of the liquid will increase. The pressure will stay at 1 atm since the water is let into the air. The same principle is used at pelton turbines. The lubricating film on the bearings is a hydrodynamic lubricating film. What is true though is that this will only work with parts which are not too much worn.

[@brentbradley6711]

No it creates more pressure in the hose

[@matthewblakesmith2322]

Every vehicle owner should watch this. Invaluable information.

[@tayninh69]

You are an excellent teacher, I have learned so much from you, thank you. JOB WELL DONE.

[@chavt66]

I have a 2000 Chevy Suburban with 270k miles and for the last couple of years I've been experiencing oil pressure problems. However, I believe my problems may be due to a sticking oil pressure relief switch/valve. Oil pressure averages about 40 lbs at idle and increases to 60+ when I accelerate. Occasionally, it will drop to 5-10 at idle and 40 when I accelerate. If I rev the engine for a few minutes, the oil pressure will go back to normal. Would using an engine cleaner/ help with the possible sticking switch? If so, is there a particular product you recommend?

[@jasontruman3220]

Try sea foam Flush the oil a couple times

[@fhiggenbottom]

When working as designed, moving parts on an internal combustion such as pistons, camshafts, rocker arms, connecting rods and crank shafts float on a thin film of oil in the engine. But contrary to Eric's semantics, it's the oil pump that produces both the volume and flow of oil necessary to produce the oil pressure between the moving parts and the oil passages of an engine. Not only tighter clearances but higher oil flows equal higher oil pressures for an engine and are the primary reason for higher capacity oil pumps. And while true that clearances in an engine produce resistance to flows from an oil pump they're but ONE (1) of the components for engine oil pressure. Pumped oil volume velocity and oil viscosity are also factors. If you don't believe that the oil pump is the Genesis for oil pressure in an internal combustion engine just remove it from the engine and watch the oil pressure drop to zero and the engine crater! The name of the game for properly lubricated engines is to maintain a thin film of oil at ALL times between moving parts! New crank shaft bearings, cam shaft bearings, higher volume oil pumps and even lower viscosity oils can help do that unless the engine is so worn that the pump and viscosity can no longer compensate for the increased clearances and provide the proper protective film necessary. For years, racing engines have employed this knowledge and use much larger clearances than day to day automotive engines in order to reduce engine friction and improve horsepower but those high performance engines also use insane oil pump volumes to survive long enough to win a race.

[@nate851]

this is true

[@wei00007]

So, theoretically if your pump was no longer able to provide enough flow/volume to create the required pressure, could you "cheat" the system and use a higher volume pump to artificially boost the pressure?

[@arienwilkins]

Fred Higgenbottom yes, but a higher viscosity oil would most likely be more economical

[@fhiggenbottom]

arien wilkins As a note of caution, a higher viscosity oil might increase oil pressure but due to the lower flows associated with higher viscosity oils fail to provide the required lubrication when the engine is under heavy load.

[@nathantidwell4153]

Very well stated.

[@jamesferres3537]

you are the only guy that' know what his talking about. I saw many videos that they recommend change sensor unit gauge etc.,, the first thing is to check if you have engine pressure.in other words don't kill the messenger first!!

[@16thnative]

Very insightful, I never knew it worked like that. I thought it just pumped oil to the top of and around the engine. You really know your stuff!

[@JJ-wp5yn]

low pressure doesnt necessarily mean your engine is worn. pressure is inversely related to oil flow. The higher the pressure; the less flow you will get to your bearings, journals vice-versa. In modern higher reving engines, thinner oils are used to supply more oil to these parts faster.

[@stefankautzky5083]

its not low oil pressure in general, its loss of oil pressure.

[@THERIGGEDONE]

My thoughts exactly

[@philliprose1003]

Please share the answer ASAP as I have no other way to transport my son who is in a motorized wheelchair with cerebral palsy and is autistic. Weighs about 200 lbs and impossible to transport any other way except a wheelchair lift van. No sympathy just answers timme is of the essence here. Thanks

[@HighestRank]

Most public transports have a wheelchair-compatible van.

[@mikebarnacle1469]

42

[@alexanderandrosaliewalker7075]

Great Video thanks for sharing the info as I was having variable oil pressure at low speeds but at freeway speed the oil gauge stayed steady around the center of the gauge!!!

[@orhanaydogan1867]

This video is the most useful video about oil pressure on youtube.

[@NOBOX7]

actually liquids are very compressible, im speaking from an engineering perspective the term for liquid compressibility is Bulk Modulus

[@dwutschke]

True, however the reason that MIL-L-23699 (turbine oil) and more specifically MIL-PRF-5606H (Hydraulic fluid) are used in aviation is because they are not as compressible, on top of their standard characteristics, as other fluids (which is a big deal in a T701D Blackhawk engine turning 69,000 rpm cranking 1800 shaft HP at the 5606H filled gimbal). What Eric is trying to point out is that liquid oils are not nearly as compressible as a gas. We're talking about every day consumers looking for information, not trying to confuse them by tech'ing them to death... I understand people want to show their stripes, but keep it simple and don't ruin the main point.

[@NOBOX7]

Dustin Wutschke bullshit its the fact they stand up to 500 deg temps and it contains anti oxidant and varnish inhibitors , the specifications never mention Compresibility , the reality is non compressible hydrolic fluids are water based bro,,, crazy i know but water is dam near in compressible under even extreme conditions and its the last thing you want in jet engine oil at 500 degF , im not tryn to show any stripes im just speaking facts not bashing Erci he is the shit we all know this im trying to share knowledge brother, your not the first to give me shit and try and dumb down the world even more....

[@AngryAmericanVet]

NOBOX7 troll

[@NOBOX7]

thanks

[@j.helvie6563]

From a practical perspective, oils are essentially non-compressable. Realy isn't an issue till you get over 200 psi.

[@rodneycollman169]

Excellent video Eric

[@TheRupert9000]

Great explanation and I love your videos/site!

[@landondixon962]

very informative. I do not know a lot about cars and when my low engine oil light came on this really helped me understand what is going on and gave me some knowledge going into the car shop.

[@user-xn2wg2oe7s]

ETCG, you're one of the best. Thank you

[@dustiemaag5428]

this guy is pretty awesome thanks for your time to make these videos eric

[@tylerpearson4905]

I’m sure you might not see this but for the record you are good at explaining things and I know more after watching this, thank you.

[@beekeeper6063]

Love your videos dude ! Very insightful and professional. Keep being you ;)

[@Rod-vj6dd]

awesome video. good job in explaining all the dinamics. I got a problem or need help on my vehicles I go to ur videos. always helpful. keep those videos coming an thank u. my ranger had 170,000 miles an oil Guage goes crazy at idle at times but normal pressure under throttle. my only work vehicle shop in not that advanced mechanic but not sure where to go

[@williamsanchez3462]

i love this guy ...always explain the things better than anyone ...

[@OG_DSM]

Thank you for solving the many other questions I had pertaining to oil pressure.

[@rdmlphelps1]

Thanks Eric. That was eye opening. Bring me to a better understanding.

[@tavo24vv27]

Thank you for the knowledge.

[@curtthechameleon]

Really like these videos. Great explanations.

[@kijetikimavi]

It takes years to gain experience,, and here someone give you knowledge in minutes.. thank you!

[@franciscogru4643]

Thank you Eric, you are very elaborate with communicating what you understand, i feel a lot smarter now