The boss decided to sublet the vehicle out for repairs . . . meaning a shop will remove the differential and do repairs on a bench and/or stand. I suspect every single gear and bearing will get replaced
Whatever interesting information that shop finds, I probably won’t hear anything
As far as that ATF+4 fluid, I encountered the same thing several years ago. I was working on a mopar with a Benz transmission, yet it called for ATF+4. I got a good chuckle out of it, but filled it with the mopar brand fluid. I suspect the fluids are chemically identical, but it wouldn’t do if the customer knew the transmission was Benz, not mopar, hence slap their own name and designation on the fluid.
I never looked into it . . . would I be correct in assuming that ATF+4 bought from the mopar dealer costs less, versus the 722.6 fluid bought from the Benz dealer?
One of my coworkers has a Tacoma . . . several years older than op’s truck . . . but it also uses ws fluid and has no dipstick. he asked me how to do a fluid and filter service. We looked up the procedure on identifix . . . I know, I know, but it’s the only website at work that shows Toyota technical information . . . anyways, I printed it out and it showed a way to enter “automatic transmission fluid fluid detection mode” without a scanner. yet a few days later, he said he just drained the fluid and refilled with the same amount of fresh fluid. And he wasn’t even the first owner of the truck, so who knows if the previous guy had it done correctly? Could be it was underfilled from before he even owned the truck, and if he put in the same amount, that would mean it’s still underfilled