Re: Transmission fluid
Can you use RP synthetic on top of the factory fluid when doing a service? It would seem that the synthetic would not mix properly with the factory oil, but I'm just guessing.
It woul be expensive but maybe I could add RP, run for a 1000 miles or so and service again. Just wondering how to get all the old oil out w/o draining the converter and if the two oils are compatible.
2004 WJ Overland
15.92 best e.t. w/ 2.29 short time :mad:
2002 GMC Sierra 2500HD
Duramax Diesel/Allison Tranny
13.0 @ 103 (4wd) w/ 1.72 short time :thumbsup:
470 whp / 900 wtq