2024 Duramax 6.6 Diesel Specs. 2 of mine run delo 5w40 year round and the newest one i'm trying the ultra. Duramax's are easy on oil.
Factory fill is delvac 15w40. Chevrolet has made big improvements to the 2024 silverado hd 6.6 duramax turbo diesel.
2024 Duramax 6.6 Diesel Specs Images References :