Madeleine Michael C

2025 Duramax Oil Capacity 4wd. Increased engine oil flowrate with piston cooling jets that flow 50% more oil than the 6.6l duramax lml. The oil capacity of the 6.6 duramax engine is 10 quarts, including the oil filter.

I’ve had my 2025 sierra 2500hd for a fairly short time and only have 470 miles on it, yet the oil life indicator already reads at 77%. Took my truck into the dealer today for the first oil change that gm pays for.