What synthetic oils are approved by Cummins for the 2004 CTD 600 ?

[CMeese]

Would like to know which synthetic oils meet Cummins specs and approved for the CTD 600engine? Would like to know product name and viscosity. For example Shell Rotella 5w40 synthetic meets CH4 but does not say CI4 as does their non synthetic Rotella T 15w 40. Also what are the AMSOIL specs?

 

[nickleinonen]

i think the newer bottles of the 5w40 rotella say CI4 on them. and delvac1 is rated for CI4 [again, older bottles may not show it, but the new ones should, and the new truck&suv mobil 1 i think is CI4]



i am going to start using delvac1 in my truck, even if i do find that it is not CI4 rated. it is a good oil