Ok guys , I have a 2006 Dodge 3500 DRW 4x4 5.9L Cummins 6spd trans. Which of the CJ oils is the best to use in the engine outside of the synthetics.The CI Plus,etc. are getting hard to find. After reading other posts , etc.,if I'm reading these right, the CJ oils are not as good as the CI plus, etc. oils. What I'm wondering is what is the best oil to use in my 5.9L Cummins? I changed the diffs to Amsoil 75W-110 Severe Gear along with Mag-_Hytech diff cvrs. and I am satisfied with that so far. Any help on this topic would be greatly appreciated. Thanks in advance.
Dan
Dan