I'm changing my fluid and I'm going with royal purple synthetic this time. I has some B&M trickshift leftover from last time, 2 quarts, and was wondering if it mattered if I mixed the two. Thanks.

 

I am not sure if it matters, but I would not do it.

 

trickshift and hotshift mix with any standard fluid, so compare it to mixing synthetic and standard fluid.... then decide for yourself... i wouldnt, but i run 50/50 type F and hotshift/trickshift in my th350c with shiftkit and that works just fine as it should, since they told me to do it....

if you really want to though i'd go to b&m and ask em, their website should be on the bottles

 

Thanks for the replies so far. Anybody else have any input??