Originally Posted by JIM THEO (Post 3072420)

Isn't the viscosity itself that describes a good oil for our engines and so far there aren't big differences in European and USA engine oils and additive packages on them, there are remarkable American oil companies for heavy use say Redline, as European say Motul Fuchs Elf and so on.
Viscosity index, Total base number (longevity/service intervals) and more importantly HTHS (stability on continuous high temp) is what we should search on a good oil no matter if it is 0/20 (ILSAC/fuel economy reasons only) 5/30 (only Mobil1 AFAIK is ILSAC) or higher viscosity!

For heavy street use or track driving an HTHS index less than 3,5 may be detrimental for the engine if we haven't an oil cooler which leads us to an oil of 5W30 and higher viscosity, only repeated UOAs may tell the truth about the oil we use, oil service intervals and driving habits.
Otherwise we should choose a very good >=5W30 oil as the factory oil sensor is in the correct place on the engine block and reads real oil temps not lower than those the oil achieves as other manufacturers do.
So IMHO the answer is NO, 0W20 isn't adequate for heavy street use even in cold climates!

Originally Posted by NordicGT86 (Post 3072333)

Is 0W20 the adequate viscosity for driving hard a GT86?

Originally Posted by NoHaveMSG (Post 3072946)

0W20 is fine as long as you are running a quality oil.

http://www.ft86club.com/forums/showthread.php?t=125178

Originally Posted by NordicGT86 (Post 3072860)

What about the SAPS oil level for heavy street use? mid SAPS oils or high SAPS? A5/B5, A3/B3, C3. What is your opinion?

Originally Posted by JIM THEO (Post 3072950)

Factory suggests 0W20 for economy reasons only (ILSAC), why to use such low viscosity oil in 300V series when you track your car, this 0W20 isn't good for economy nor for high protection as a 5W30 that may save your engine in special occasions?
Of course this is your own car but better safe than sorry!

Originally Posted by JIM THEO (Post 3073002)

Each car and driver is different I already mentioned it above, it isn't a case one size fits all!
You have an oil cooler which means low oil temps thus no need for a quite high HTHS oil.
Even car mileage, climate conditions, fuel quality, modifications, dust (aftermarket free flowing filters degrade the oil) etc affect oil life and behavior, when running on E85 is completely different story from running 91 or 93 pump gas (95 or 98 RON in Europe), detonation is minimal as fuel deposits that degrade your oil.

I can't see why someone should stay to a non ILSAC 0W20 oil when can have a thicker 5W30 with better safe margins except of the little lower oil temperatures (thinner oil dissipates heat better).

So you are right, IN YOUR CASE 0W20 300V based on evidence is enough, but let me know would you suggest for everyone that track regularly his car to use this viscosity Motul on pump gas without oil cooler?
Have you seen repeatedly UoA of cars heavily used with no oil cooler same as yours?
That's the point!

Originally Posted by JIM THEO (Post 3073133)

This is my opinion I don't suggest you to follow my approach, what I am sure for is that a 0W20 oil even 300V or Redline can't withstand continuous very high temperatures if you haven't oil cooler, especially if you have some oil consumption with the thinner oil stay on a 0W30/5W30 with good HTHS >=3, bear in mind Redline/300V are of the thicker 0W20 w/high HTHS oils in this range although they don't cover ILSAC specification that means they don't favor fuel economy.
A Mobil1 5W30 (ILSAC spec) covers both cases fuel economy and engine protection...

Originally Posted by NoHaveMSG (Post 3073145)

Man you Greeks don't give up. No wonder you won at Thermopylae.

Oil breakdown from temp with a good synthetic is not the issue, it is pressure loss with temp with this motor in particular. This is all common and searchable info on the forum.

Originally Posted by JIM THEO (Post 3073154)

What is wrong with you?
When we talk about cars and oils stay on this, do you know me, do you know where I am coming from, my past, my experiences, do you want me to talk about countries and wars or what?
You say a 0W20 is ok for all purposes and then that there is an issue with oil pressure, is it ok or not according to you?

Originally Posted by NoHaveMSG (Post 3073293)

If you are offended by that, I apologize. It was a joke meant to lighten up the thread. Me>>:slap:

Originally Posted by NoHaveMSG (Post 3073293)

I did not interpret this to mean track use and have never claimed 0W20 is good for all purposes. For the most part, it is fine.

Track use is a whole other situation. If you are serious about it, it is up to you to monitor your own car. Climate, session duration, and modifications to the car will dictate what you need to run. If you are doing four 15 minutes at low ambient temp with a car with just bolt on mods, yeah you are probably fine with a good 0W20. If it's hot and you are running 30 minutes, then you should probably consider additional protection.