15W-40 is the generally recommended weight to use, while the API rating MUST be CJ-4 for 2008 and newer engines, while CI-4 can be used for 2007 and older engines. You MUST use diesel oil, as oil intended for gasoline engines is not intended to withstand the higher temperatures of diesel engines.
Yes
No, use exactly what Cummins recommends and nothing else.
15W-40 is the recommended weight, and it MUST be API CJ4 rated oil - gas engine oil will not suffice, nor will the API CI4 oil used for pre-2007 engines.
15w40 with an api rating of cj4
Yes
15w40
15w40
I use chevron delo 400 15w-40.Have for 5 years no problems!
Polaris has their own special "fork oil". 7.5 weight is equivalent to polaris oil or use a 10 weight to improve dampening.
What oil weight does a 2001 yamaha raptor 660r use
Dodge V8 uses 10W30. Cummins diesel uses 15W40.
hd 30 weight oil of your choice.