View Full Version : Best Oil for 1195 Prostar 205

05-03-2011, 02:55 PM
ok - I've read many of the comments and they are all great - now I can change the oil, transmission fluid etc. What is not 100% clear is what kind of engine I have! Crazy - but it's not in my manual and not clearly identified anywhere obvious...I got asked this question when I went to buy the oil and oil filter...can anyone help?

05-03-2011, 03:29 PM
Post a pic of the engine.

05-04-2011, 01:55 AM
Unless it's a rare? (not sure if they were even offered) big block, it's a 5.7L Chevy TBI or LT-1. TBI looks like a truck motor, LT-1 is a Corvette engine, says Corvette.
Either way 15W-40 and a Napa/WWix 1069 filter for either small block. ATF in the trans, don't remember if it was Dexron III or type F, but the trans aren't too finicky.

FWIW, I used 10W40 most of the time in my LT1 with no issues. More important how often you service the engine/trans than brand or oil weight IMO.