Cummins ISL Oil recommendation
Getting ready for my first service, and I see the shop offers standard oil, semi synthetic, or full synthetic. Terrific :) Any idea what would be the best oil for the ISL that operates as a vacati...
Forum Discussion
20 years ago I researched this at a shop that rebuilt million mile truck engines. They said that engines using Dell 400 were amazingly clean and those using Shell Rotello T had a slight amount of buildup. Since I often let my heavy equipment sit for extended periods I went with Shell R T in the hopes the buildup would help protect the engine from corrosion.
No way would I pay for synthetic if I changed the oil every year which I do not and I only use Shell RT which I change every 15,000 miles.
No way would I pay for synthetic if I changed the oil every year which I do not and I only use Shell RT which I change every 15,000 miles.
