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
Many reasonable choices.
Shell Rotella T 15-40 and Delo 400 15-40 are popular choices and are available at Walmarts, etc.
You will not wear out that engine in an RV, so worrying about whether a special (read that expensive) oil extends engine life from 800,000 miles to 1 million miles is not really relevant.
If you have some special circumstance such as pulling a 10,000 pound trailer through the mountains in the summer, that may warrant other considerations.
Shell Rotella T 15-40 and Delo 400 15-40 are popular choices and are available at Walmarts, etc.
You will not wear out that engine in an RV, so worrying about whether a special (read that expensive) oil extends engine life from 800,000 miles to 1 million miles is not really relevant.
If you have some special circumstance such as pulling a 10,000 pound trailer through the mountains in the summer, that may warrant other considerations.
