I want to know the same thing about the oil. I am supercharged now and I need an oil change in about 1,000 miles. I have 40,000 miles on my stang and want to know if I can just switch over to synthetic and what weight????
Yes, you can still switch to synthetic. If you're S/C'd, I'd go for a higher weight, say 5w30 or even 5w40. I've read that the Cobra R comes stock with Mobil 1 15w50 in it. It won't hurt your engine, and with the higher temps you'll be experiencing in the combustion chamber, a higher weight oil will probably stand up better.