How much fluid do you need for an Allison Transmission?
Olivia House
Published Feb 09, 2026
How much fluid do you need for an Allison Transmission?
2 Gallons of Allison Transynd synthetic fluid- (We have found this fluid to be far superior to anything else available.) It is completely compatible with Dexron 3 and Dexron 6 designed specifically for the Allison transmission. Dmaxstore Note: (If you you have an Allison deep sump pan you will need 3 gallons of fluid.
How often should I Change my transynd filter on my Allison?
Install magnet on new filter and fill with Transynd fluid, reinstall filter on transmission. Using transmission funnel fill transmission with 7.4 quarts of Transynd and check level. We recommend this service every 30-40 thousand miles to keep your Allison running its best.
Which is transynd oil for Allison automatic transmission?
TranSynd™ heavy-duty automatic transmission fluid, a remarkable synthetic oil exclusively formulated by Castrol for Allison Automatics, extends Allison transmission oil drain intervals 300%. TranSynd’s viscosity stability and resistance to thermal breakdown protect your Allison Automatic far better, far longer.
How often should an Allison Transmission funnel fill be used?
Using transmission funnel fill transmission with 7.4 quarts of Transynd and check level. We recommend this service every 30-40 thousand miles to keep your Allison running its best. Allison does not recommend using a machine to filter or flush the transmission.
What makes Allison Transmission the best in the world?
At Allison Transmission, quality isn’t just a goal. It’s a promise—a promise to engineer the highest quality transmissions in the world. But this promise doesn’t end after the transmissions are sold. Allison ensures that our high quality transmissions endure with Allison Approved transmission fluids.
What to do if your Allison Transmission goes into limp mode?
Unfortunately, a driver can’t reverse limp mode. If you find yourself stuck in third gear with this model of transmission, it’s probably time to have it rebuilt. Pro Tip: Keep your Allison transmission well-maintained to avoid accidentally triggering limp mode. This will also improve your vehicle’s overall functionality!
Why was Allison TES 295 approved for transmission?
Because the specification was developed by people who know Allison best. Allison TES 295® approved fluids provide extended drain intervals and offer thermal and viscosity advantages over conventional petroleum based fluids, as well as other synthetic fluids.
Is there a recall on the Allison Transmission?
Allison transmissions built in the mid-2000s had a recall issued for their TCM module. If yours appears to have never been replaced, your best bet is to contact the manufacturer and ask about the replacement process. Don’t keep driving a vehicle with a faulty part!