So, I took my VX in to a dealer for the 15K service. I brought in all my own fluids (amsoil) I made sure to point out that it was different from other isuzus and I even printed out the schedule from the cd-rom manual. BUT, I didn't spell out flush versus drain on the tranny.

I get home and I notice that out of the 12 qts of transmission fluid I brought in, I still have 5.5 qts left over. DAMN. Looks like they didn't flush it, just drained it.

I'm going over the manual and it doesn't use either term - flush or drain, just "change" and it only talks about 9.1 qts, nothing about ~4 qts. But the pre-service checklist their computer spit out, which I signed, does say "drain and replace."

So, in your guys' opinion, should the dealer have done a flush, is that expected knowledge on their part? Do other isuzus have the same drain vs flush difference?

The other problem is now that they wasted 4 qts, I don't have the 9+ qts to do a full replacement and amsoil is kind of a PITA to get.