Try thisi own 90 5.0 foxbody with basic upgrades i got close to 200k miles i’m running regular oil on it...my question is...i’m planning going with synthetic oil what is recommended to use n what grade...??
@Potomus Pete read this then decide for yourselfToo late to switch. You will create leaks you don't have as the synthetic works like a detergent. Can also dislodge sludge that could find its way to worse places. At least, this is what I've been told.
use it. Don't think too much about it. It's a little like tires, it's all in what you do with them, some tires are better in the rain, some are better on the track, they all wear out, so does oil, just change it. I stick with one brand.Now you guys have me afraid to use the mobil 1 full synthetic oil I just bought for a oil change. I got the one for high mileage engines if that makes a difference. The guy I bought the car from last year told me he had just done a full synthetic oil change before I bought the car. I know the oil looked like it was fresh but wonder if he was telling the truth about full synthetic. I have no leaks at all right now.
WHAT?As I referenced earlier in this thread, I switched to 0W40 Mobil 1 Synthetic in a 166k mile convertible. I put 2 thousand miles on it, and sold it last week. No leaks...
@General karthief