Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Mobil 1 0W-20

SubieNate · 04-16-2014, 10:52 PM

Mobile 1 and Pennzoil platinum are the two best "easy to find" 0w-20s on the market. Tons of great UOAs in a huge variety of cars for both over at BITOG.

The Subaru oil is okay, and both the Toyota and Mazda 0w-20s have a good number of fans over there.

It really depends on what your personal thoughts on what is most important are. The two main things people seem to be looking at are the NOACK rating and the viscosity gradient. NOACK rates the oil's resistance to vaporizing, viscosity index rates the actual range of viscosity change with temperature (believe it or not, this can vary greatly within a particular grade of oil from one OK to another).

The super high viscosity index oils are great because they behave more optimally at both startup and at operating temp. Toyota 0w-20 is one of the kings here, at around 168 iirc. M1 is the closest of the ots oils but still only rates around 120 from what I remember. I don't think the Subaru is anything to write home about here.

A low NOACK indicates a high resistance to vaporization as I said earlier. This is great for keeping gunk out of your intake tract etc and keeping the oil in the crankcase and not in your combustion chamber. Some believe this is very good for today's high commission direct injected engines. Pennzoil platinum rates at the top of the list here.

I tried m1 and PP. PP seemed quieter so I stuck with it. It's also a bit thicker at operating temp so I figure it was a bit better for when I really thrash on it. YMMV.

Some of the other OE oils are liked because of their additive packages, Mazda falls into this camp if I remember right. Great friction modifiers that some of the "normal" oils don't get anymore for emissions or some other crap reason.

Cheers
Nathan

04-16-2014, 10:52 PM	#34
SubieNate Senior Member Join Date: Aug 2012 Drives: 2013 FR-S Ultramarine Location: Temecula, CA Posts: 959 Thanks: 288 Thanked 560 Times in 269 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Mobile 1 and Pennzoil platinum are the two best "easy to find" 0w-20s on the market. Tons of great UOAs in a huge variety of cars for both over at BITOG. The Subaru oil is okay, and both the Toyota and Mazda 0w-20s have a good number of fans over there. It really depends on what your personal thoughts on what is most important are. The two main things people seem to be looking at are the NOACK rating and the viscosity gradient. NOACK rates the oil's resistance to vaporizing, viscosity index rates the actual range of viscosity change with temperature (believe it or not, this can vary greatly within a particular grade of oil from one OK to another). The super high viscosity index oils are great because they behave more optimally at both startup and at operating temp. Toyota 0w-20 is one of the kings here, at around 168 iirc. M1 is the closest of the ots oils but still only rates around 120 from what I remember. I don't think the Subaru is anything to write home about here. A low NOACK indicates a high resistance to vaporization as I said earlier. This is great for keeping gunk out of your intake tract etc and keeping the oil in the crankcase and not in your combustion chamber. Some believe this is very good for today's high commission direct injected engines. Pennzoil platinum rates at the top of the list here. I tried m1 and PP. PP seemed quieter so I stuck with it. It's also a bit thicker at operating temp so I figure it was a bit better for when I really thrash on it. YMMV. Some of the other OE oils are liked because of their additive packages, Mazda falls into this camp if I remember right. Great friction modifiers that some of the "normal" oils don't get anymore for emissions or some other crap reason. Cheers Nathan Last edited by SubieNate; 04-16-2014 at 11:05 PM.