Originally Posted by Zoo
I just picked up my W. Forza from the freightliner dealer doing engine, generator and chassis annual. Costs were fair. Except… they wanted $600 to do fluid and filters for the transmission? Allison 6 speed series 2. Looking for recommendations, please. There has to be a better way. Rig is 2015 with 21000 miles. This would be the 1st transmission service. Looking for experienced advice. Thanks!
The ONLY filter is Allison part number 29539579, and it costs around 10 bucks at Allison dealers. $25.00 for same filter in an AC Delco box at Chevy dealers. The TranSynd ATF does not need replacing at 21,000 miles unless contaminated by dirt, water, or coolant. Testing by JG Labs or Blackstone Labs to confirm the fluid is still good costs a LOT less than what you've been quoted. The external filter mentioned above was SUPPOSED to have been changed at 5,000 miles, and IF that was done, you don't need to change it either.
I suggest you visit the Allison forum here on iRV2 to read more about fluid testing instead of getting ripped off for a fluid and filter change you are not likely to need.