No more 0w-20 ( 2022 Subaru WRX )

[@Samlol23_drrich]

I’ve got a 2023 Wrx. At 1000 oil change I switched to 5w-30. I’ve got a 2014 forester xt with 250k miles that I’ve owned since new. I change the oil every 3k w Mobil 1 5w30 and I’ve had good luck so that’s what I did. Thanks.

[@sezwo5774]

You really have a Forester XT with an EJ engine with 250K? Is that milage on one and the same turbo? Was it always fed Mobil1 5w-30? It is a remarkable milage for that engine. It is detuned a bit in the Forester XT compared to the WRX. Maybe that is why you did so well. What kind of driving may I ask? Sorry for so many questions but your case is very interesting. Most Subaru turbos don't make it much past 100k.

[@Samlol23_drrich]

@@sezwo5774 ​@sezwo5774 I will answer them all. The car is sitting in my driveway right now With about 271k which is when I had to stop driving it because the check engine light is on and it will not pass emissions in New York. It's on its original timing chain and I'm almost sure it's stretched, which causes the 0016. I attached a Bluetooth Code Reader to the ODB2 port and reset it (once per drive). Did that for the last year I owned the car with no issue at all? So I've owned it since new. My commute is About 140 miles a day. With highway and long island traffic. So a mix. I used 5 W30. Mobile 1, not that it matters Every 3,000 miles, which is basically once a month. I purchased a case at a time of the OEM Japan filters. The car lived in my heated garage So except for an occasional ski trip it Wasn't sitting in sub-zero weather overnight. It's the original turbo Pretty much original everything. I don't drive like a 90 year old woman, But I also don't drive like an 18-year-old from Fast and Furious. I wish I could do that timing belt myself because I would love to keep the car. It's worth more sentimentally than it is for parts. I'm just figuring out where to send it at this point since it's still insured And costing me. Any other questions feel free to fire away Sorry, this is long. I'm dictating it

[@RobertBaker-th1bn]

2023 wrx 75,000 I used 5-30 ever since I bought car new. Runs great!

[@Samlol23_drrich]

@@sezwo5774 I replied a couple of days ago but see it’s gone. Yes, I’ve still got the car. Original turbo. Mix of highway and city driving for my commute. At this point I need a timing chain that’s stretched I’m pretty sure, and it’s not worth the labor cost for a car with almost 300k so gonna sell it for parts.

[@robalexander7348]

That is a wise choice for your Subaru oil, i will be taking delivery of my new 2024 Subaru WRX next week. We get very high temperatures here in Australia 35c/40c + so i will be changing to 5/30 in my new car, after it's 1st service,. 0/20 is to light for our extreme hot summer conditions in Australia 👍 Au

[@jimbojumbo-os1np]

As a fellow aussie, dont follow the service guide over here, oil needs to be done either every 7500km or half way between each service. Im dropping oil in my FB20 every 7500 and its coming out black even with 5w30. Dont know if its how i drive or just the environmental conditions but the 1200km service, while better than 15000km, is still way too long.

[@robalexander7348]

@@jimbojumbo-os1np I have been advised by 2 Subaru service advisors to run the origional 0w/20 until the first service as its a special run in oil, and then switch over to 5w/30, remember the WRX has a 5 year engine warranty to back up the owner 🙏

[@jamesg8246]

I've run both Pennzoil Ultra Platinum 5W-30 and Motul 8100EFE 5W-30 in our stage 2+ tuned 17 WRX, been running it tuned over 25k miles, have multiple UOA's from Blackstone. Based on that I do roughly 4k OCI's using the OEM Japanese black filters. The oil isn't spent at that point but these DI Turbo engines have a fair amount of fuel that ends up in the oil and compared to an engine oil is cheap.

[@Flatline_WRX]

Solid info

[@Jamo-hm1oi]

Been doing the same research. I switched to 5W-30 Platinum and Mobil 1 Filter today. Cincinnati is a tad cooler than you in TN but it gets warm here.

[@Flatline_WRX]

AR here actually, but yea 5-30 will still work perfect man.

[@Jamo-hm1oi]

@Flatline_WRX My mistake man. Great channel!

[@Flatline_WRX]

@@Jamo-hm1oi thank you!

[@malboro555]

I'm from Europe and here nobody of Subaru Wrx and Sti, Evo's owners use so thin oils. Standard is 0W40, 5W40 and for modified cars 0W50, 5W50, 10W60. I personally recommend Motul oils 300V series.

[@greatcornholio5541]

Used that oil on my V4 1100 Aprilia super bike…it liked that 5W-40, ran like a champ and often at some very high temps.

[@robertkennedy1737]

I agree that 5w-30 would probably be a better choice for the south-east US. I live in NC and just decided to change from 5W-20 to 5W-30 for my Mustang with a 5.0 in it. My engine is approaching 60K miles and I have never had a problem with the 5W-20 I have been using, but I plan on changing to the new Valvoline Restore and Protect in 5W-30 to see if I can detect any difference.

[@Kopernicus67]

The engine/drivetrain are very similar to Euro turbo cars like the AWD Audi A3/A4/Q3/Q5, etc., an AWD turbo car set up for performance. I use LiquidMoly synthetic, which most enthusiast owners of those cars recommend.

[@Keith-e5f]

My 2023 WRX recommends 5W-30 in the manual.

[@sezwo5774]

That Pennzoil Purebase is great but the 5w-30 is ridiculously thin. It is I believe the thinnest 5w-30 oil on the market! I'd use the 0w-40 Pennzoil, ..it is actually thicker despite the 0w designation, and would be perfect for your car and location. Whatever you use, just don't use any high zinc oils. That WRX has silver plated rod bearings. Zinc in presence of sulfuric acid corrodes silver.

[@jd646]

I've heard that the Pennzoil natural gas oils are thinner than the regular crude oils. Where can I find that information?

[@sezwo5774]

@@jd646 From oil spec sheets released by manufacturer. Google "Pennzoil Platinum 5w-30 pdf" and you will find spec sheets. Look under kinematic viscosity and you will find values. Compare to other oils and you will see that Purebase oils are the thinnest within their weight categories.

[@sezwo5774]

@@jd646 Google manufacturers pdf data sheets for specific oils. Compare Kinematic Viscosity at 40 degree specification for different oils. Purebase Pennzoils are one of the thinnest oils in each weight category... whether it be 5w-30, 10-30 or 0-40. It is a great oil nonetheless just on the thinner side. That is why I like the 0-40 instead of 5w-30. I wish they had a straight 40. I am a fan of straight weight oils for summer and for long distance high speed driving, other situations where cold starts are rare and thjere is no need for thin oil at start up.

[@jd646]

@@sezwo5774 I agree 💯

[@RobertYonng]

10,000 miles how many oil changes so far? I do 500 miles then @2,500 and every 2,500 for a turbo car. Not arguing you do know the 0W-20 SP oil has better wear modifiers also direct injection LSD protection. Don’t know your climate but why not 0W-30?

[@The_SL0WRX]

5w-30 during the hot season for the win😊

[@Flatline_WRX]

Yes!

[@malboro555]

Still too thin . Win starts from xW40 to xW60

[@The_SL0WRX]

@@malboro555 can you educate me on why 40 is better then 30 🙏

[@malboro555]

@@The_SL0WRX 40 and up much better protects engine in high temperatures ( prevents against blow up during fast and spirited driving on high revs).

[@VEEZER1]

Never alternate oil weight

[@sheepdog3828]

EPA mandate for 0w-20 and 0w16, yup nailed it. Out 23 4rnr we bought with 5k on it. dumped the OEM oil and used Valvoline 5w-30. 107* here in south Texas for three months so yeah longevity. Our 2014 4rnr with 106k switched to 5w-30 around 80k or so and made trip from Texas to Chandler at 75-85 mph and am glad it had the 5w-30! It was hot and brutal on I10 and many were passing us up at 85! Yup, do your own research and then take responsibility for that decision. My F250 6.2l runs 5w-30 but for shredding season, when I tow 12k. So it gets Rotella T6 5w-40. The 5w-30 turned tar black in less then 5k. Oil is cheaper then an engine and Ford ain't gonna give me a new one, right?, right..... Good luck and enjoy your baby!

[@Mirei_wrx]

I run the exact same oil and weight here in hawaii 100% recommend

[@CharlesBridgTec]

Isn't the thinber oil better for VVT engines? Been using 0w-20 for years but change it every six months regardless of miles on my Toyota which are both 2019 model years.

[@Flatline_WRX]

If the car was stock. Yes. But once you start modifying and with more boost the higher weight helps

[@bayareanational]

I run Motul 5w30 with a black Subaru oil filter in my VB. It only has like 6k miles though. I was thinking change over to 5w40 in the next year or two. I run Castrol 10w40 in my old EJ25 Forester. Quiets the piston slap a bit. 😂

[@Flatline_WRX]

That’s way I ran well motul 0-20 but same subi filters.

[@fayizd654]

How's the vb wrx on 5w30?

[@Flatline_WRX]

@fayizd654 I’m at 26k miles and about to change the oil again 😉 not a single issue

[@fayizd654]

@@Flatline_WRX I just switched to 5w30

[@Flatline_WRX]

@@fayizd654 nice! i think its the best route

[@NineInchTyrone]

Direct injection dilutes the oil

[@fortnite360HZ]

if u check the VI index on the European oils its better than any North American oil and yes Castrol has Euro 5w30 really good stuff VI index is important and the HT HS ratings as well the VI index has a thicker oil film on 0w30 European oil vs that American 5w30 so in reality the 0w30 euro oil protects better than North American 5w30

[@safewaycart]

pistons move up and down at high speed. if you put higher viscosity oil in the engine then piston rings will suffer because of higher friction and a much higher temperature on cylinder walls. I would not do that with my car. yes high ambient temperatures are a concern for me too and that's why I try to change the oil more often.

[@Flatline_WRX]

Good thing this is a boxer and they move side to side 🙂

[@AntilleanConfederation]

@@Flatline_WRXlmaooo. Got em. But no yeah dude is full of it. At high temps the higher viscosity will evaporate less and significantly cool the parts better by transferring heat off them more so than boiling oil.

[@Shadows-RC]

A little more friction doesn't always mean more wear. Things are not always how you think they are.

[@safewaycart]

@@AntilleanConfederation listen people: evrything boils down to DRAG COEFFICIENT. now, piston rings: the higher the viscosity, the higher the drag. the higher the drag the less efficient the system. you consume a little more fuel, metal surfaces are under higher stress because of more friction and you have higher wear on piston rings. what about camshafts? the higher the viscosity the higher the protection but modern syntetic oils with low viscosity already offer plenty of protection in that area. what really matters is not the viscosity but the amount of metal parts and debries in the oil. with small tolerances a clean oil is even more important. me personally I use a thin oil and change it frequently.

[@fortnite360HZ]

The Castrol 0w30 Euro oil has better protection than that 5w30 penzoil

[@kennethward4985]

Switched my Toyo from 0-20 to 0-30. In Florida I just could not stand using 20. I think the numbers are just politics anyway. They don't care if our motors burn up, as long as they can say we forced out one more mpg.

[@hesato]

I got the owners manual of the japanese wrx and for japan they specd 5W-30.

[@Flatline_WRX]

Yup welcome to USA epa standards lol

[@artyom188mph]

Dude Same thoughts I recently bought new BRZ recommend 0w20 but I live in Houston it’s 105 degrees outside for the good 7 months which turn 0w20 to the water. Thinking to jump in motul 8100 0w30 at least.

[@jgomez7535]

Im a 22WRX owner myself. Since i live in cooler Chicagoland, i will run 0/20. But your informative topic is much appreciated. 👍🏼

[@AbleMable]

use 5w30 in the summer only then.

[@Flatline_WRX]

Chicago does get cold for sure. But yea summer time 0-20 won’t hold up

[@terryl9996]

Try running Amsoil SS 0w30 for the best range & overall protection

[@Flatline_WRX]

@@terryl9996 yea that’s night stuff lol but it’s also the most expensive

[@joepak7554]

I’m in Chicagoland and switched to 5w30 even in the winter. Next winter I’ll try 0w30

[@steve8803]

For those that like to keep their car stock and retain warranty, I wouldn't switch oil weights. The manufacturer will just use it as ammo to deny an engine warranty claim should you ever need it.

[@Flatline_WRX]

For sure. But my car has been tuned and modified since 1k miles so warranty was kinda questionable anyways lol

[@Dr.Ticklebum69]

Unfortunately that argument doesnt hold a lot of water. If you're in the situation of choosing weights ie: doing your own oil changes, Subaru is already known for trying to deny warranty claims even if you kept receipts from buying oil and filters.

[@beaches2mountains230]

I SWITCHED TO THE SAME OIL THE SAME MOTUL 8100 ECOLITE 5W30 AT 750 MILES..WOULD HAVE DONE IT SOONER BUT THE SUBARU OIL FILTERS I ORDERED RAN 10 DAYS BEHIND. IVE DONE A DEEP DIVE ON LEARNING ABOUT OILS BEING THIS IS MY FIRST DIRECT INJECTION CAR..PENNSOIL ULTRA PLATINUM ACTUALLY SEEMS TO BE BETTER THAN THE MOTUL 8100 ECOLITE SO I MAY SWITCH. ONE THING ID HIGHLY SUGGEST IS ORDERING A NEODYMIUM MAGNET OIL DRAIN PLUG LIKE MISHIMOTO OR CUSCO, HKS ETC..THAN YOU WONT HAVE TO WORRY ABOUT THE CRUSH WASHERS EVERYTIME AND YOU CAN KEEP AN EYE ON IF THERES ANY METAL SHAVINGS..JUST SUB'D BC WE HAVE SIMILAR TASTES AND SIMILAR CAR. MINES A BLACK 2023 PREMIUM. CHEERS

[@markwarnberg9504]

The 5w30 is good from -35c (-31f) - +35c (95f) so you´v covered your bases pretty good. If it get´s above 95f for any leangth of time you might consider a 40 weight.

[@steve8803]

@markwarnberg9504 From what I can see, 0w20 is rated up to 40C external temp and 100C internal temp. I realize that theoretically 5w30 may offer better protection in hot weather, but my concern would be that the manufacturer would use that as an excuse to deny an engine warranty claim should I need to make one.

[@Flatline_WRX]

@steve8803 it’s a possibility what’s funny though the exact same car anywhere other than USA doesn’t use 0w-20. We only use it here because if epa. They use higher everywhere else for protection and longevity even bone stock

[@steve8803]

@@Flatline_WRX Yes, I know. But I don't think me using what goes on in other parts of the world as a defense to my oil weight choice will matter to the manufacturer. My owners manual specifically states 0w20, so they will likely use that to weasel their way out of a claim. Not worth the risk for me to switch. Now for those that have already voided their warranty with tunes and the like, it won't matter to them.

[@Flatline_WRX]

@steve8803 exactly. Your car and if you are stock I’d keep it stock oil as well. I don’t blame you

[@markwarnberg9504]

@@steve8803 Where did you find the klimatic scale for 0w20? On the standardize chart for oil the 20 weight is rated at -15c +15c. Yes the warrenty has you over a barrle if the manual say´s "USE ONLY A 0W20 OIL".

[@chrischarles9218]

From the test I have seen (from a guy that test for race engines) Platinum actually had better bearing wear than the Ultra. Strange since the Ultra is special order.

[@Flatline_WRX]

Yes! They both had pros and cons and for some things like you mentioned the plat was better. Ima run it for a bit and see how the oil breakdown is and such then might run ultra and rest myself.

[@AbleMable]

kzbin.info/www/bejne/emTUd5l3etVsd7c ....Ultra beats Platinum in every metric.

[@chrischarles9218]

@@Flatline_WRX Also, the long change intervals are complete garbage. EVERY engine builder will tell you this. Its not the oil that breaks down, it's the oil dilution that hurts it. Turbo cars accelerate oil dilution. I'll be changing my oil every 3,000-3,500 on my VB.

[@Flatline_WRX]

I’ve been doing 4k and so far the oil has looked decent at oil change time.

[@chrischarles9218]

@@Flatline_WRX I think the oil could actually go to 5k but as cheap as oil is, its peace of mind changing it sooner.

[@OsightblinderO]

Motul's X Clean Gen 2 has some tried and true carbon build up reduction properties. Check it out!

[@Flatline_WRX]

That’s what I was running. It’s good oil no doubt. Lab tests and such where showing the pennzoil outperforming it though. And cheaper so that’s a plus

[@stock.cars.2ned]

Amsoil is best but there are just as good oils at Walmart at half cost.

[@Flatline_WRX]

Yup. That’s why I use penz plat now. Many many many tests done and they always rank at the top of list. Usually just behind ams oil

[@McRex203]

Amsoil signature series my guy, I’ll never use anything else. Used to use ultra platinum in my Si, it’s the best over the counter oil bar none, but spending the extra 20-30 bucks on amsoil is 100% worth it.

[@Flatline_WRX]

I am using ams oil in my diffs for sure. I debated ams but jeez that cost lol

[@uglyandattractive]

Amsoil is definitely amazing. I went with 0w20 signature for my first oil change in my vb and it felt like a whole new car. Better and more responsive than when I drove it off the lot. Today I'm changing it to 5w30 signature series so we'll see how it runs after that. Then I'll decide if I want to go back to 0w20 or stick with 5w30. I'm also adding the Amsoil coolant booster. For that I'll be doing a video on My cars channel showing the before and after coolant Temps and we'll see if it makes a difference. Kushestvbwrx

[@hendrixandmitch]

@@Flatline_WRX dude fior real amsoil SS is the bomb! pennzoil ULTRA PLATINUM is excellent oil. check out the oil test project farm did on those two oils. good luck with your channel.

[@Flatline_WRX]

@@hendrixandmitch project farm is how I come about the penzoil 🤣 that led me down outside testing and such

[@hendrixandmitch]

@@Flatline_WRX i had a 2015 wrx and i loved that vehicle. now i have a 2023 subaru legacy limited. i’m kicking myself in the ass for not getting the 2023 wrx. i just changed my oil that had the amsoil ss in there and man that oil kept my engine clean. all of the contaminants went back into the oil itself. so just out of curiosity i picked up some of that PENNZOIL ultra platinum and put that in yesterday. car feels great but i will probably switch back and forth between the two. i change my oil every 4000 to 4500 miles. i want my shit to be and stay crisp, lol! i just love subaru’s

[@XxCrAzY509xX]

Rotell t6 5w40

[@Flatline_WRX]

I had debated that heavily due to the high zinc content, but plat has high enough content. And really wanted to keep a 5-30

[@nickthompson529]

Your car has a thermostat, ambient temp does t change oil recommendation. I also run 5w-30 instead of 0w-20 but not due to ambient temps. Lol

[@lonniebeal6032]

Hmm, so you don't have a radiator that is affected by ambient temperatures? I had a 4 cylinder suv that warmed up in 5 minutes in the summer, but took 20 minutes in the winter.

[@Flatline_WRX]

That quite literally what an SAE temp chart is “Engine oil recommendation in relation to outside temperatures”

[@nickthompson529]

⁠@@Flatline_WRXi realize ambient air temp will effect the start up flow characteristics of your oil. I should have worded it a bit better but provided your cars cooling system is healthy operating temp will be very similar whether your operating in the winter or in the summer under normal driving conditions. A thicker oil may be needed for harsher operating conditions such as towing or hard driving. Those temperature recomendation charts for oil have a huge overlap where either oil grade (sometimes up to 4 different grades) will cover most of the temperature the majority of drivers will see. The recommended oil grade really only comes down to one choice on the extremes. At the coldest temps (below freezing usually) a thin oil is recommended for cold flow properties at start up.

[@nickthompson529]

@@lonniebeal6032I understand warm up time, I was speaking about operating temp once the vehicle is up to full temp. The difference in summer and winter operating temp is only 5-10* at most with a healthy system. A thinner grade oil can provide start up wear benefits, but this isn’t why this man says he changed and thus I wasn’t addressing that particular issue.

[@nickthompson529]

@@Flatline_WRXthe 2023 wrx book lists 5w-30 and 0w-20 covering the exact same ambient temperature range…

[@tonysteele3805]

Just run Mobil1 Euro 0W40 its available everywhere and is some of the best oil money can buy.

[@Flatline_WRX]

@@tonysteele3805 I still run Penz Ultra Plat. Working great

[@tonysteele3805]

@@Flatline_WRX Yeah its a fine oil too. I just mean if you want that little bump up in HTHS and for better availability you can always run it. Or even Castrol Euro. Walmart has them.

[@Flatline_WRX]

@tonysteele3805 for sure. I love Mobil 1 it’s a solid oil.

[@laniersulak9920]

just bought a 24 wrx and live in texas. ill be looking to swap to 5w-30 for the next few months (end of aug now), but should my next oil change around nov/dec be back to 0w-20 for the colder months?

[@Flatline_WRX]

I run the 5-30 year round. No need for 0-20 as we don’t get cold enough ( I’m in Arkansas )

[@laniersulak9920]

@@Flatline_WRX the manual says to go with conventional. What’s the difference if I go synthetic?

[@Flatline_WRX]

@@laniersulak9920 I did loads of research and conventional vs full synthetic is night and day. I would never ever run conventional in a boosted car. I now currently run Penzoil Ultra Plat. The lab testing and independent testing is pretty big in favor. Only thing else I would run would be amsoil honestly but the cost is way higher. Dollar for dollar I think the penz plat is the best. The motul is very nice as well honestly. The real reason I switched is that I can buy the pens play local. The motul I had to order ahead of time.

[@fortnite360HZ]

@@Flatline_WRX Penzoil is known for damaging engine seals don't bother with Penzoil u are better off using Castrol European oil will smoke every North American oil that people are using.....and if u don't want to then Amsoil is another beast of an oil also REDLINE as well not this Penzoil that is not all that

[@fortnite360HZ]

Also not all cars can use Synthetic a Mazda Rotary engine u can only use Conventional oil so be careful what u use

[@ranran2218]

I've never ran the ow20 for my 19 wrx. I've been using motul 5w30 the entire life of my car and no issues at all. Almost 4 years of ownership and just under 40k miles.

[@Flatline_WRX]

Nice!

[@elroz1675]

Audi EA888 2.0 liter engine, 3rd gen. It required 5W40 in Audi TT during 2016 and 2017...then in 2018 they switched to 0W20! The same engine and now 0W20. That makes me nervous. No thanks.

[@Flatline_WRX]

@@elroz1675 exactly

[@fortnite360HZ]

If u have an Audi use 0w30 castrol Euro oil the european stuff its better for the car u have don't use North American oil its garbage vs the european stuff

[@elroz1675]

@@fortnite360HZ yep. that's the way to go.

[@firezemissle6656]

Why is no one recommending idemitsu oil. Stuff comes from Japan and it’s reasonable in price.

[@Flatline_WRX]

Never heard of it

[@firezemissle6656]

@@Flatline_WRX full syn oil that comes in the car.

[@Flatline_WRX]

@firezemissle6656 gotcha. I think a majority of us that are beyond stock have moved on to more proven brands and better properties

[@firezemissle6656]

@@Flatline_WRX the oil used on the Mazda 787 that first won 24 hours lemans back in the days was developed by idemitsu.

[@davidrowe8771]

Dealerships use it Subaru just put the logo on it lol

[@Royalbliss206]

So W520 is better in colder climates?

[@Flatline_WRX]

Yea I commend to look up oil viscosity charts and temp to read more, but yea thinner oil works better in colder climates and thicker for warmer

[@Royalbliss206]

@@Flatline_WRX thank you

[@TheFK8Life]

I run 5w-30 Mobil One extended performance - mobil1 filter Type R making 566whp@7600 30psi 0-20 is too thin and made for economy/mileage vs performance

[@Flatline_WRX]

Yes! I had considered Mobil 1 as well.

[@LoveLikeaHurricane]

Bad choice for timing chain as known from s2000 community

[@Flatline_WRX]

@@LoveLikeaHurricane why? Do we have data to back it?

[@DR-te8mc]

In South Africa, Subaru recommends 5w 40.

[@Flatline_WRX]

Is it pretty hot there?

[@DR-te8mc]

@@Flatline_WRX o yeah..definately

[@Flatline_WRX]

@@DR-te8mc might be why the recommendation is higher. That and USA epa standards 🤦🏻‍♂️

[@shane250]

You know, your engine operates at about 90⁰c. So saying you're getting 40⁰c ambient doesn't matter, as it's going to reach 90⁰c in a minute or two. The first number (W) refers to cold start viscosity. The second number is determined by the size of the oil passages in your engine. With all kinds of strainers, VVTs, and hydraulic timing tensioners, a thick oil might not make it through. But... If your engine is the same engine (same number) as previous generations that used higher viscosity oil, you can use that higher viscosity.

[@lonniebeal6032]

Freeze some 0w20, then try your line of BS again.

[@shane250]

@@lonniebeal6032 Learn to read, then try commenting again.

[@warrenwong7774]

Did you consider 0w-30?

[@Flatline_WRX]

I did.

[@thetechlibrarian]

Isn’t it actually thicker or something along those lines. ? The viscosity improvers I could be totally wrong but I remember looking into it as well.

[@younghifi]

0w-30 is actually less stable than 0w-20 or 5w-30. Generally the higher the range between the two numbers the more difficult it is for the oil to keep up with parameters on the lower and higher temp ranges. Still, some car manufacturers recommend it for their engines.

[@steverugerguy9606]

Yes you are correct...5w20 is very stable and typically better noack numbers than 0w20 or 5w30...but 0w20 has the same spread as a 10w30 which is stable also.​@@younghifi

[@SuperFreshWRX]

How is your engine doing on this oil after a year

[@Flatline_WRX]

Still rocking it and running great

[@fortnite360HZ]

@@Flatline_WRX A tuner I know mods hondas and on the Hondadata the 0w20 actually believe it or not the engine ran much cooler according to the Hondadata computer that was hooked up to the car cause the thin oil has less engine drag ....pros and cons u may gain a bit more HP with the cost of engine wear u can't have everything but this is true facts

[@SteelyEyedMissileDan]

As a devout Amsoil cult member, I recommend you buy Amsoil Signature Series 0W-30 for your beloved Subaru and donate that poverty-tier oil to a needy Dodge/RAM hemi owner, since they're just gonna burn it anyways.

[@Flatline_WRX]

🤣

[@southtownsjoe32]

dude, new cars have crap oil pumps. .....if it don't pump, it won't lube!

[@Flatline_WRX]

If an oil pump doesn’t pump it won’t lube??? Was aware of that 🤣🤣

[@t.regnerus301]

Real men run 5w-40.

[@Flatline_WRX]

True lol

[@alj7094]

lol fk you need to run 5-40 to be a real man that’s pathetic

[@VEEZER1]

If you use anything heavier than 0w 20, you are nerfing your car. Way slower rpm rev. And almost 1 full boost psi gone.

[@Flatline_WRX]

Data to back that? Loads of tuners run over 0w20. I personally do and see 20+ psi daily 🤷🏻‍♂️

[@VEEZER1]

@Flatline_WRX jump in a 22+ wrx same trim different oils You'll see what I'm taking about instantly. My dealer put in 0w 30 I demanded 0w 20 be put back in. The rpm was the real kicker but I went from 13.6psi to 12.9 with a heaver oil

[@Flatline_WRX]

@VEEZER1 so no data In every other country than USA they use heavier weight. Subaru must be nerfing themselves.

[@VEEZER1]

@@Flatline_WRX you betcha

[@fortnite360HZ]

@@Flatline_WRX U will gain more HP has been proven on a DYNO he is right but at the cost of engine wear so yes more HP but more wear as well ...I'd rather protect the engine more than anything else but I like the European oils they have a much better additive package than the North American stuff

[@echardcore]

0W-20 is garbage. Pennzoil 5W-20 for our 11 Fozz with a new short block at 70k. Rotella 5W-40 for my 11 WRX.

[@Flatline_WRX]

Rotella t6 is amazing for sure

[@AntilleanConfederation]

@@Flatline_WRX isn’t T6 diesel oil?

[@Flatline_WRX]

@@AntilleanConfederation its multi vehicle but used to be the GOAT for wrx engines and shit.

[@Ram14250]

Science over random beliefs. Oil is so controversial. Things break... driver dependant. Use what's recommended and change at or before 5K miles. No magic here, but a lot of untested opinions that say other.

[@Flatline_WRX]

Science stands behind using a higher viscosity oil though 🤷🏻‍♂️ Especially more so when you start running higher boost like I am.

Just compare the oil recommended in USA owner's manual versus oil recommended in European or Japanese owner's manual (for the exact same car).