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
Brett: I cannot believe that you have not heard of the 2 new oils! I usually look to you for info! FA4 ( was once called PC11) is the oil for newer engines. Not backwards compatible. Apparently the labeling will be different. CK4 is the replacement for CJ4 and can be used in all of the previous diesels. Dig around on the Chevron website and you will see lots of info.
Moisheh
Moisheh
