Allison Transmission
How often do you have your Allison 6 speed transmission serviced?
Forum Discussion
I'd check with Allison. The new 3000's have a 5-year fluid change requirement. Older units have a shorter interval. Cummins requires a 12m/15k service schedule regardless of which comes first so even if you only go 5000 miles a year you still need to d the service to keep up any extended warranty. If you have a coach that is well out of any warranty, I'd get a baseline by doing ALL the engine, trans and chassis service then you at least know everything is good now.
