0W 20 v 5W 40

[ahausheer]

Originally Posted by chulooz

This is just plain old misinformation.

YOU can run -20 at the track and hard on the streets in the summer but dont tell others that the higher wear resistance of a -30 or -40 is mythical.

Never said anything about wear resistance.

[ahausheer]

Its not all about viscosity. Oil acts like hydraulic fluid for the variable cam timing. To be fair though, Toyota did do a running change in oil weights without changing the engines in any way and some engines require different oil weights depending on which continent they are on. So I say follow what the manufacturer says but there is some wiggle room. That's right, I'm ending my discussion in this thread with the term wiggle room.

[Froylavin]

So back to 0w20 on the next change would be ideal?

[rice_classic]

Originally Posted by ahausheer

Its not all about viscosity. Oil acts like hydraulic fluid for the variable cam timing. To be fair though, Toyota did do a running change in oil weights without changing the engines in any way and some engines require different oil weights depending on which continent they are on. So I say follow what the manufacturer says but there is some wiggle room. That's right, I'm ending my discussion in this thread with the term wiggle room.

Good point.

It's also important to note that The Manual itself recommends a higher weight oil.

Originally Posted by The Manual

An Oil with a higher viscosity (one with a higher value) may be better suited if the vehicle is operated at high speeds or under extreme load conditions.

[Mitch]

I've seen 5w30 going around as the higher viscosity to run if you're tracking regularly, but I don't think you will hurt sticking with 0w20. Get your oil tested for metals next change and see if it's hurting.

[AJ PwR]

I think for daily driving 0W20 will do the job. Start up and warm up time remains the same.

if you do track the car, I think 5W40 will make more sense. It can handle high temperatures so the engine oil will not break down as quickly as 0W20.

[ultra]

What about this suff: Mobil1 0w 40?

http://www.gulf-sport.com/store/mobi...40-engine-oil/

I live in a hot climate and want an oil that'll protect well and stand up to high heat, even under AutoX/HPDE conditions (above 100 Farenheit ambient most days).

we get really crappy oil selection here in Dubai, although the guys at the link I posted do sell Redline oils too.

[NeedsmoreCowbell]

^^^ a lot of GTR's use that weight. I suggest you turbo it and change to 0w40 post haste !

[gmookher]

this is not he correct oil
I'm in AZ and the 0w-20 works fine at 115F
you just get more evap

the correct oil will offer more protection that one that is too thick at startup or moreso too thick during use, which is the case of the 5w-40

it appears there is subaru in lebanon
http://www.bazerji.com/subaru/sgws/home.html
do not return to the shop you took your car to, they have no clue what they are doing

the OP needs to get to toyota or subaru
10 second search shows as follows

[jpit]

There is alot of misinformation being given out in this thread. This article really helps explain what oil you should be using.

http://www.bobistheoilguy.com/motor-oil-101/

[midenginebias]

smh.

1. Do not compare weight and viscosity to other different engines. Apples and oranges.

2. 0w-20 can even be used on a track application. Really, has anyone tested it under hard use? I don't think so, but it's not like synthetic 0w-20 can't handle higher temps and provide less breakdown over time as well.

3. 5w-40 MAY be better under hard use, but that is not guaranteed. The properties of the oil MAY be different by additives, brand, etc.

4. Buy your own oil and oil filter and just pay for the labor. That way you get what you want for your given application.

[serialk11r]

I thought higher oil weight for track use was at best a bandaid for the problem of having oil that's too hot in the first place...

[Neziah]

Originally Posted by jpit

There is alot of misinformation being given out in this thread. This article really helps explain what oil you should be using.

http://www.bobistheoilguy.com/motor-oil-101/

Seriously, go read this article.

[Kiwi]

Just a little food for thought.
If STI sells 5W40 oil for the BRZ, I would trust them that it's totally fine.

http://www.sti.jp/parts/catalogue/br...8050ST060.html