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...
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I love Supertech oil and they do sell Diesel oil. They are packaged either by mobil or shell. I've never had a problem using it and would suggest it to anybody. Much cheaper at walmart.
