trans fluid level
 

I read a post on another site where a guy is having problems with his TH400 spitting trans fluid out the vent. A few of the responses are to run 1 quart low and that all performance trans are run this way. I have a 400 and have never run it a quart low and never had fluid pushed out. Is it a common practice to run a 400 one quart low?

Re: trans fluid level
 

If you have a factory shallow car pan, then the full hot mark, on the dipstick is even with the pan gasket. The full hot mark on the factory deep truck pan is about 1 inch below the gasket. If you use a car dipstick, and tube, but have a truck deep pan, then effectively you are overfilling the trans, which leads to oil out the vent. The factory sets oil level, so that hot, the oil level will not reach the spinning parts in the barrel. If the oil gets up that high it will froath up , like a milk shake, which raises the level even further. The result is the breather system cannot handle the extra mist and will leak it out.

Re: trans fluid level
 

Thanks for that information. How does one identify a truck /car dipstick or tube?