Transmission Fluid

I recently opened up a 1967 torqueflite core, remnants of a amber colored fluid. Looked good, nice condition, thinking some kind of hydraulic fluid.
All very true. And no matter WHAT, you cannot tell some of these guys anything. They have it stuck in their minds to use ATF+4, LGBTQ+ or whatever else the newest fangled high priced fluid is. The fact is, some of the hydraulic fluids have better cooling properties than any transmission fluid. .......and the guy who disagreed with my post about the Trick Shift is one. Disagreed that Trick Shift is type F when it says so right on the label. Hopefully that was a fat finger......if not, I'll just stop right here. LOL