Forum Discussion

Ed_Manifold's avatar
Ed_Manifold
Explorer
Jun 05, 2021

Allison 3000 transmission

I had my Allison 3000 transmission oil changed to Trans Syn synthetic fluid at 34,911 on 2/12/15. I have now just under 50,000 miles and my question is should I have the transmission fluid changed again? I understand at the fluid change at 34,000 that the oil in the torque converter was not changed so this change would add too the impurity of the synthetic fluid. I also wondered if I waited too long to make the second synthetic change? my transmission seems to perform perfectly. Any thoughts or ideas? The diesel engine is the Cat C7.
Thank-you
Class A
  • Ed_Manifold's avatar
    Ed_Manifold
    Explorer
    Jun 08, 2021
    I would like to thank everyone who responded to my topic question about the changing of my transmission fluid. I have an appointment for next Tuesday to do the fluid change.They will use the Transynd TES 668. One of the responses gave me a link to an Allison site stating that they are using this fluid in all of their transmissions.

    Thanks again for the help.

About Motorhome Group

38,705 PostsLatest Activity: Jan 14, 2025