Cummins Onan Manual

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 for the correct motor oil that meets the proper specifications. Shell Rotella 10w-30 T6 lists every spec except...

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The Cummins ISL 425 HP (often the ISL9 or ISL 8.9L, depending on year) is generally a strong, reliable engine, but like any heavy-duty diesel, it has some known issues worth factoring in—especially at higher mileages.

Hello fellow RAM owners. Steelbob611 / Texas here. I am new to this forum and a first time RAM truck owner after a lifetime of being a GM truck and SUV owner. Made the switch and purchased RAM 2500 Crew Cab 6.7 L Cummins Diesel. Delivered October 2024. I have put about 1600 miles of gentle break...

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Transfer Case Seal Failure - 2024 RAM 2500 6.7 L Cummins Diesel

Cummins Oil | RamForum.com | Dodge Ram Forum for Truck Owners & Enthusiasts

Not to bring up an old problem with Cummins ISL 400 engines, but I didn't know it was an old problem until we recently (June 2017) experienced catastrophic engine failure and started searching the Internet for answers. I thought my experience might help someone else avoid trouble and "bank-...

INSTALLING FASS PUMP on 8.3 cummins in a 40' 2002 Allegro Bus

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Cummins has not had a good engine since the introduction of DEF. The 6.7 was pretty much the same from 2007-'18, not many issues with the engine itself. The emissions system has had its ups and downs, if I remember correctly the first few years of DEF there was issues with the SCR itself and that was recalled/replaced.

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