I bought an 03 cobra but do not know who the last owner was so I don't know if they used synthetic or not. This is my first supercharged car so I was wondering if synt. is the way to go anyways.
image said:I'd use synthetic, your cobra deserves the best. I have a case full of royal purple sitting in my garage 5w20.
04CobraMatt said:One thing i can say... when i had regular ford oil in the engine (after the new heads went on) when i went to empty my oil-catch bottle their was a white/yellow sludge that wouldn't pour out. I had to use a cloth and push it in their to get rid of it before putting it back. Iv'e never seen that before when running mobile1 5w30. I can only imagine where else in the engine that sludge has built up.
MustangThief said:I'm curious how many people run 5w20 compared to 5w30 and 10w30.
Now I'm trying to think if I got 5w30 last time or 10w30. Damnit.
I can't remember.
I think I've been using 10w30.
JB said:sorry, I refuse to answer questions that have already been discussed ad nauseum oke:
(there are 60 Terminator threads with SYNTHETIC in the title....)
.