Wicked69

I am glad you guys clarified this because I run stock bottom end engines with a 100k or more in miles with my twin turbo's. If I can find it locally I am going to try the VR1 40 weight oil that was mentioned. Seems like a good compromise.

edge04

iTrader: (9)

I just got a case of the full synthetic VR1 20-50 race oil. It says "not street legal"....I was shocked to see that. I assume because it is not good for cats, which I don't have? Why else would they say "not street legal"?

http://www.valvoline.com/products/co...ng-motor-oil/9

zittman

iTrader: (4)

We run Schaffers Racing oil. We run them in our dirt late models turning 8500 rpm constantly. Excellent oil. I run it in my supercharged 402 in my truck, wife's Saturn Outlook and Dodge 2500 truck. The oil stands up to alcohol very well. Has zinc additives etc...

CALL911

iTrader: (17)

Zinc in the oil is essential to the FI motors as I understand it. The link posted at the beggining of this thread has many oils that have it. I use the VR1 20W50. Its easily found, and generally not too expensive. Granted I don't really drive my FI car in the cold, but specifically when my motor was built, it was built with bigger clearances, and I was told specifically to use the 20W50 weight.

edge04

iTrader: (9)

I took my car out of winter storage yesterday, 5 months it was in a heated building. Yesterday it was probably 50 in the building. Went to drain the 20-50 and it was coming out like tar. Had to start and warm up the engine in order to drain it. Wouldn't want to drive the car with 20-50 in it until fully warm. I switched to the synthetic as it should be a bit thinner.

CALL911

iTrader: (17)

Its a thicker oil, so it will have the properties of a thicker oil. If it was not for the larger clearances in my motor, I would run a lighter weight.