Can I get some recommendations on types of oils I should use.

 

Delvac, Delo, and Rotella are all good oils.

 

Most of us think this is what Cummins puts in the engine after they assemble it.
http://www.valvolinehd.com/onroad/blue.html

Lots of us use this Delo 400 15W-40.
http://library.cbest.chevron.com/lub...9?OpenDocument

Many people use Shell Rotella. I don't have a link handy fot that.

 

thank you all

 

Rotella STINKS!
Not that it's a bad oil, I use it religiously.
It just stinks after you change the oil for the first hundred miles or so. I don't know why. Can anyone tell me?

 

This explanation is as good as any, I guess.
http://dodgeram.info/tsb/2000/09-02-00.htm

The Delo 400 I use smells for a couple of thousand miles after an oil change. Some days are worse than others. But my 98.5 has the draft tube mounted back in the 12-valver position, not up front like most other 24-vavlers. Maybe that also has something to do with it.

 

Thanks! ;D

 

I don't notice a stink with Delvac 1300 Super. I don't feel left out, either.