[Marmaduke]

Originally Posted by RetiredSFC 97

thought we may as well talk about oil. Wouldn't be C5 gen if we didn't.


I use Valvoline 5/30 Synthetic. Don't tell the C5 engineer dude on CF. He got nasty with me one day.

Let's dance

I think what’s "Key" here are the words "Full Synthetic". . . . Mobile, Valvoline, or whatever doesn't really matter as much as it being "Full Synthetic". Also, don't mix oil weights, e.g., 5Wx30 and 10WX30. . . . . . or Full Synthetic and Non-Synthetic, etc, etc. Me personally, I still use Mobile 5Wx30.