Running 10k oci on our 03 5.9L hpcr, and in California we recently switched our fuels everywhere to a biodiesel blend now, so that affects our fuel filters but not sure on the oil life.
15w40 is what I'd prefer and seeing some threads on the new SN rating should that be a worry?
I see the shell T6 15w40 full syn or the mobil delvac extreme 15w40 syn options at walmart and the Delo 400 XSP SAE 15W-40. Let me know what you would recommend, and we have run a 5w-40 in it before with mobil tdt but on WOT I'd want that extra protection.
15w40 is what I'd prefer and seeing some threads on the new SN rating should that be a worry?
I see the shell T6 15w40 full syn or the mobil delvac extreme 15w40 syn options at walmart and the Delo 400 XSP SAE 15W-40. Let me know what you would recommend, and we have run a 5w-40 in it before with mobil tdt but on WOT I'd want that extra protection.