Hello. I need a little help with a couple of newbie questions.

1) I may not have received all the owners manual(s). I have the 2003 Ram Truck owners manual which makes little or no mention of the Cummins engnine. Also have the diesel truck maintenance log book. But, nothing for simple owner maintenance of the Cummins engine. Should I have gotten more manuals from the dealer?

2) Given the 1st question, what oil rating & weights does Cummins call for for the 03' SO engine? I assume different weights for various temps/seasons too...

Thanks!

 

Anything that's 15W40, API CI-4. Brands like Shell Rotella T, Mobil Delvac 1300 are 2 appropriate oils.

 

Use good filters like Fleetguard. Change fuel filter everyother oil filter. Install a fuel pressure gage ASAP and understand what the readings mean.

Seach other posts for info. All your questions will be answered on maintance. It will take you a few hours, but trust me it will help and inform you.

 

The FUEL Pressure Gauge is not needed as it was on the older Cummins. The fuel pressure on the new Common Rail system is much higher than the older systems and controled differently than them. I don't believe there has been any reports of the fuel pressure systems going bad except those that were contaminated with GAS or watered down diesel.
OF course this is all just my opinion

 

Thanks for the quick replies.

As a follow-up, do you guys think I'm missing part of the manual (original question #1) and is 15-40 still recommended for winter, approx 0 - 45 degrees farenheit?