Discuss 4th Gen Ram trucks (2009‑2018 & 2019‑2024 Classic)—engine options, mods, repairs, part compatibility, reliability, and community builds.

May 30, 2019 · The 2019 CGI Cummins doesn't call for 15W40 at all. I assume this is because of the hydraulic roller lifters, instead of the old reliable flat tappets. I plan to run either Rotella T6 5W40 or …

Jun 28, 2023 · I have a new '22 Ram with the 6.7 Cummins with 13K miles on it. It has been in and out of the shop for the last few weeks for a check engine light. The code refers to regen issues. The …

Jun 23, 2025 · I have a 2025 RAM 2500 with the 6.7L Cummins engine and I want to make sure I use the right motor oil and I've always used Shell Rotella. I looked in the owner's manual and searched …

Aug 29, 2025 · I have a 2015 ram 3500 with a 6.7 Cummins around 115k. I’ve always had a puff of bluish white smoke on cold start ups even during summer days. Sometimes less than others and …

Nov 9, 2014 · So I had a Gen4 cummins. Now I have a Gen5 6.7L cummins in my new 2500. So I see that the recommended oil is now either 10w-30, or 5w-40. The thing is I have a lot of the rotella 15w …

Oct 23, 2021 · iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines Cummins Quickserve new subscription based system iRV2.com Google

Dec 10, 2012 · Maybe someone can help me understand how a Cummins 8.3 ISC Diesel can range from: 250 HP to 400 HP? 8.3 ISC hp and torque Examples: 660 pound force-feet (895 N·m ) @ …

Feb 14, 2023 · iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines Cummins ISL Crankcase Pressure Code/Solution iRV2.com Google

Joined Feb 14, 2024 Posts 8 Reaction score 5 Location Central New York Ram Year 2023 Engine Cummins 6.7