Originally Posted by ericgrau

Ya, dino = mineral.
I'd go 10W30 or 20W50. Not that it matters if it's only in there for 500 miles. I'd go detergent not non-detergent for cleanliness, though not much crud will build up in 1500 miles anyway.

10W40 needs more viscosity holding additives to get such a wide temperature range. 5W30 needs a little more too. Even synthetics, which usually don't need any additives to get the proper viscosity, need a little to acheive 10W40. These additives mean more unnecessary ash, etc. when it's burnt and less base stock. Not the biggest thing to worry about, but it's something (detergents do the same thing, but they are more necessary).

Originally Posted by ddkkww888

Castro 20-50w is what the previous owner had recommend to
me.