I have to assume it's the wrong fluid, but very likely a type for an old gm vehicle I uswd to own.
Tranny started shifting hard about a year ago (1998 GP GT). Currently 190k. I basically kept it near home, changed fluid and filter, no change. Still runs pretty fine, it just hesitates between the last 2 gears. Up to 40mph it revs beyond 20000rpm. Between 45 and 40 it gets closer to 30000. Then shifts. Not a lot of thumping, but I don't fo far. You can nearly always smell burning tranny fluid to some degree.
I'm about to put a quart of Lucas Trans fix, but couldn't pump out some with my hyper tough drain pump. Maybe I had the tunes mixes up lol.
Anyway the Lucas may just prolong the agony. Not even sure if I should bother, as I giving serious thought to pulling the tranny out of a Venture I habe with a bad motor. But was wondering if I pulled out an addirional quart, and dumped the pennzoil fluid with the missing label in, is there a possibility I'd make things much worse? Or just regular worse? Or no change at all.
The fluid tjat's in there doesn't look new anymore. It's nowhere near hershey"s syrup but it ain't candy apple red anymore.
