Let Me Know if You Have Allison Transmission Fluid Questions

Dicnic,

A double drain and refill goes like this. Drain the current fluid, toss it (dont' reuse it) and refill with TranSynd. Drive the RV around until it's warmed up and shifted through the gears. Then, drain it again and toss it (don't reuse it). Change the filters and refill with TranSYnd. At this point, you're good to go. Run it until oil analysis says it's time to change.

Hope this helps !!!