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Ed_Manifold's avatar
Ed_Manifold
Explorer
Feb 02, 2015

Allison Transmission

My motorhome has the 3000 series Allison transmission and I am going to have the oil changed to a synthetic oil. How long will be between changes and how many miles can I expect. My motorhome has around 35000 miles on it. I have had it changed approx. every 6000 miles since new.

11 Replies

  • If I remember correctly once you have the proper synthetic, Allison recommends change at 50,000 mile interval or every three years.