With the disappearance of GC 0w-30, I'm looking for a replacement. My '01 GMC Sieara has a built 6.0 making about 500 crank HP. I only drive it about 2,000-4,000/year and change oil once/year. What would you recommend?
Castrol Edge 0w-40
M1 5w-30 EP
Castrol Edge 5w-30 EP
Something else
Castrol Edge 0w-40
M1 5w-30 EP
Castrol Edge 5w-30 EP
Something else