Feb 20, 2026 · Members with the Cummins 6.7 ISB engine on Freightliner chassis report confusion over oil capacity, as the manual often lists 12 quarts, but the dipstick reads low even after filling to that …

Sep 5, 2022 · I’m looking to buy an ISL 8.8 or 8.9 engine with the common rail fuel system and without the DEF system. What are the best and worst years to buy? Also, any...

Jun 22, 2025 · 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 …

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 …

Jan 27, 2026 · The Cummins® Turbo Diesel engine is equipped with several features designed to assist cold weather starting and operation: The engine block heater is a resistance heater installed in the …

Nov 4, 2025 · Members are seeking ways to increase the power of a Cummins ISB 6.7 (300hp) engine for better hill performance while towing a stacker trailer, with a focus on remaining legal in California. …

Nov 8, 2018 · It wasn't till the 2019 Cummins (new CGI block) you started hearing about engine failures. What “engine failures” are you hearing/posting about? I have had my ‘24 Ram 2500 w/6.7 CTD six …

Nov 1, 2013 · 18CrewDually Senior Member Joined Nov 17, 2019 Posts 2,420 Reaction score 3,408 Location U.S.- New Jersey Ram Year 2018 Engine Cummins 6.7 H.O.

Apr 6, 2025 · Rolling down the road and coach completely shut off and won’t restart. Was running perfect until thisn. Its not getting fuel. All fuses, that i’ve found, have been good. I’ve read about an …

Oct 22, 2013 · I drive my 2002 American Eagle motorhome about 4,000 to 5,000 miles per year. In 2011 at 37,000 miles the engine started running rough. The Cummins repair shop in Portland discovered a …