Originally Posted By: Hootbro
Interesting choice of oil weight with that 10W-30. RAM/CUMMINS only recommends a 5W-40 or 15W-40 grade.
Not sure-it looks to have made the CES 20086 list:
http://lubritecinc.com/PDF/CES%2020086(2).pdf
Dave Newton, Jim Allen, and others have sworn by 10W30 for a while. I got a killer deal on M1 TDT & Delvac 1 5W40, so that's what I run in my '06, but the IDIs seem to like 10W30.
Interesting choice of oil weight with that 10W-30. RAM/CUMMINS only recommends a 5W-40 or 15W-40 grade.
Not sure-it looks to have made the CES 20086 list:
http://lubritecinc.com/PDF/CES%2020086(2).pdf
Dave Newton, Jim Allen, and others have sworn by 10W30 for a while. I got a killer deal on M1 TDT & Delvac 1 5W40, so that's what I run in my '06, but the IDIs seem to like 10W30.
