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...

Nov 6, 2012 · After talking to the Tech at Cummins, I feel better about the Lift Pump and CAPS probability of being pretty solid going forward. He said he personally knew of many OTR's with …

Jun 10, 2018 · Any Cummins ISL gurus out there. I have fuel in oil on my '04 ISL 370 Fefanatic Jan 5, 2026 Newmar Owner's Forum Replies: 6 Views: 562 Jan 14, 2026 Dilbert69 DI JA Apparent Regfil …

Dec 5, 2020 · Because Cummins decided to no longer service the gasket as an individual part , that opened the door for the aftermarket seller online. I also believe that the Cummins part , when …

Sep 15, 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, 2025 · 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 …

Sep 24, 2015 · Many of these are equipped with Cummins 8.3/ISC engines coupled to a 6-speed Allison which looks to be a great combo. I also am partial to Cummins engines after my experiences with the …

Jul 31, 2018 · I decided to post this topic to hopefully help educate the RV going public about how to properly operate, maintain and take care of your Onan generator for years of trouble free …

Apr 27, 2020 · Hello All. I have a 1999 Fleetwood American Eagle with a Cummins ISC 8.3 L motor that is very difficult to start lately. The problem has now worsened to...

Oct 5, 2012 · When an ISC stops running, should the high pressure fuel flow back through the filters toward the tank? Is this normal to relieve pressure and extend filter life, or does it indicate a failed …