[go_a_way1]

Originally Posted by steve99

correct modern synthetics will probably handle arround 300f before they break down but thats not the problem its the oil thins out at high temps. with most 0w20 oils your oil pressure is getting below 50psi at 7000 rpm once temps reach over about 230F.

If your seeing 250F+ then you should be looking at an oil cooler and/or running a higher viscosity oil like 5w30 10W30

their is some oil temp vs pressure data in the Basic bolt on mods guide link below.

http://www.ft86club.com/forums/showthread.php?t=91820

I am considering running an oil cooler soon here, but I want to buy somecoilovers first. I do used oil analysis and so far my results are impeccable.The oil does thin out a little by the end of its 5000km interval but wearmetals are near no excitant.

I wouldn’t change my viscosity for a DD because 90% of engine wear doeshappen at cold starts and the 0W-20 will provide better protection on thosecold starts. Yes I know I could go with a 0W-30 but I have been told by anumber of people in the industry that oils that have a wider viscosity rangetend to provide less protection in areas like the camshafts or other high pressuresituations. I used to run Castrol titanium,but have now switched to their professional OE that still uses the sametitanium additive technology.