KYF350
New member
Im sure its already on here somewhere but has anybody had any luck with 15-40 mobil delvac in a 6.0?
what is the cost for 10gal
i run the 5w40 valvoline, truck loves it when it comes to these cold Wisconsin nights.
Amsoil rules :thumbup:
I used Valvoline 5W40 for several years in my 6.0 and once I reached around 140k miles I had to start using rev-x to help with injector stiction. After I switched to Amsoil 5W40 I no longer need rev-x, it runs great even at cold starts.
had 165k on the last 2006 when it got traded in, never had injector stiction