[HandOverFist]

Originally Posted by Lou Jeffery

I think ss3011 gave a clear reason for a deep pan. If you can imagine the input shaft and the output shaft of your transmission they both rotate on the centerline or axis. All parts attached to either of those rotate with little clearance to the housing at near engine speed. If the fluid expands into their area it causes a pumping action which hurts efficiency and aerates the fluid. Aerated fluid does not cool well and the air bubbles are compressible causing pump inefficiency. Deep pans that are aluminum castings can also add some rigidness to the housing.

If that be true why did the transmission manufacturer's not envision that scenario? Also, why do many cars on the track not using deep pans not have complaints? Do you believe our transmissions get hotter than say those towing on the road or everyday use?