Okay, I need Dr. Evil and the other tranny gurus here to chime in. My current teener has only been in my possession for 6 months. I was going to replace the transmission fluid tomorrow because I have no idea how long the PO had the old oil in there, or what he had in there. Since it's 39 years old, I was wondering about the wisdom of having a hot flush done to clean out all the old oil and crud. What say all? Waste of money, or good way to start?

By the way, it currently shifts okay - some grinding if I shift into second too fast, but I know that that's not unusual for a 901.

That title might get the wrong kind of attention John

make sure you can unscrew the filler plug before you drain the fluid!

What exactly is a Hot tranny flush? I know the 5-minute oil change shops have killed a lot of engines with there so called BS engine flush.

And your tranny grinds into 2nd because the dog teeth and syncro band is worn out.

Just change the oil. No magic, no fancy stuff. If there is tar in there, you will not get it out without splitting the case. You dont need to worry as the crap stays at the bottom since there is no pump.

Similar to a straight flush.... but with extra parts. Still beats four of a kind.

I don't know what a hot flush means, never heard of it. I say just change the fluid first. If you still have shifting problems, as mentioned by others, its probably mechanical (synchros).

And don't forget.....regular old Dino Fluid...No Synthetic Fluid

Ask the experts and several recent threads on tranny fluid here

Thanks - that's what I kind of thought, and don't worry about the type of fluid - conventional GL-5 w/o the LSD additives.

I was woundering about that

What about changing it after a short time in te highway, just to make it flow out a bit faster.

Did I stutter???

"Just change the oil. No magic, no fancy stuff. If there is tar in there, you will not get it out without splitting the case. You dont need to worry as the crap stays at the bottom since there is no pump."

You can do that, but it is not going to do you much good and then you will be working with hot exhaust, hot oil, hot tranz, etc. That is a loss of productivity

Good point.

I can't stop giggling every time I see this topic...

A "hot flush" is also known as a "courtesy flush" and is employed when sitting in the stall next to someone after a spicy diner.

I was a little scared to open this thread. With this title, it sounds like it belongs in the Sandbox.

It's not any worse than the Doc's tranny clinic!! There's a bunch of people lining up in another thread to go to Canada to get there trannys checked out by the doctor. There making a big party out of it!!