best engine
What is the better engine in motor homes, 2000'-2008' C7 Cat or Cummins, most dependable holds up the best?
Forum Discussion
My only comment is a CAT will cost you more for consumable parts (filters and such) than a Cummins will but the new generation ISX engines are having turbo issues and had fuel pump (lift pump) issues as well.
Don't know about longevity but I do know that both Cummins and Cat have derated their warranty periods. My opinion is, no smog motor (Tier 4 final) will last as long as a pre Tier 4 engine will. They run too hot and heat kills an internal combustion engine.
I wouldn't be concerned about any issues too much as most RV's with diesel engines never see anywhere close to enough miles to have issues out of warranty.
Don't know about longevity but I do know that both Cummins and Cat have derated their warranty periods. My opinion is, no smog motor (Tier 4 final) will last as long as a pre Tier 4 engine will. They run too hot and heat kills an internal combustion engine.
I wouldn't be concerned about any issues too much as most RV's with diesel engines never see anywhere close to enough miles to have issues out of warranty.
