Anybody else run type F transmission fluid

Hey Rob, I bet you have heard of Old Guy transmission shops doing rebuilds recommend 1 quart of 30 WT non detergent motor oil. I've been doing that for 40+years.Old wives tale ?
I’ve never heard of that. I really don’t have much to add to automatic transmission discussions. But that could be! I’ve been a manual trans guy most of my life. The only automatic trans I ever did anything to was a 904 with the MP shift improved kit. I’ve had to mix transmission fluids before. No choice at the time. No issues from it ether.

A Long Island (then local to me) legendary trans builder, Freddy Brown did my 904 & told me to run type F. That’s all I need to know there! LOL!
When I had my converter for the wife’s car done by again, a then local legend, Pro Torque, they said run type F trans fluid. That’s all I need to know there again!

The car is drivable everyday, but is also designed to get some on the Hwy. & street. Still a mild performer of a car but it is respectable and fun. I’ve noticed a tighter firmer shirt with the F fluid over the others. In my performance and race cars, that’s what it gets. According to others here, it’s fine in there daily drivers.

Again, I’ve never heard of 30WT oil or the previously mentioned Hyd. fluid.