Tom
Thanks for sharing your experience with Allison transmissions. I have a MH 1000 in my MH and for the past eight years I have used Transynd or Castrol TES 295. I used the two year interval for the first change and four years for the second. I put five thousand or less miles on my MH yearly and suspect that I could make the change intervals much longer. Is there any limit to how long I can run Transynd with testing? As for Allison transmissions, when I bought my MH I thought the Cummins ISB engine would outlast the Allison transmission, but now I feel that the transmission will outlast the engine.
