quote:
Originally posted by dipstick01:
I have a 1990 ford bronco xlt 351W. It has 173,000 miles and uses no oil
. chevron is supposed to be a great oil, but why are there some rumors of it thinning out, It gets 70 degrees max right now on the coast and am using 10w-40. should I keep using it? Just wanted the truth on this oil
Dipstick01
Don't sweat it, buddy. I use dino 10w-40 Castrol GTX in my little rice burner, sure it thins out some, but who cares? At its thinnest, it will still be around a 30-weight, and that's enough to keep your engine together.
I had a Bronco 351 v-8 once, and I used 20w-50 GTX and straight dino 30 weight monograde. I think I liked the straight 30 weight more. If you are worried about thinning out, why not try Chevron Delo 15w-40? There is also Chevron Supreme 20w-50.