2001 Chevy Blazer 4x4, with 4.3 Vortec V6
Out: Valvoline Restore and Protect 5w-30/ Fram Ultra Synthetic XG3980, about 2k miles of service.
In: Mobil 1 ESP 0w-30/ Fram Ultra Synthetic XG3980, will run it for 4k- 5k miles.
Chose ESP and will stick to it because it’s only $27, and it’s...