I just bought a used toyota echo automatic with 140k on it, and treated the engine oil and the transmission oil to an autorx treatment, per the instructions.
About 800 miles into the transmission treatment I developed a small seal leak right where the driver's side axle enters the transmission. 200 miles later I did a full replacement of the fluid. Might the seal leak stop (like it did with the oil leak on my rear main seal, after ARX) at some point, or should I replace the seal now? The leak is slow so I am inclined to wait a while just to see if it "heals", but I'm curious to know what to expect. Thanks for a great product.
The leak has stopped. The trans fluid is the Castrol Import Multi Vehicle. Here is the timeline:
142,200 - added arx to transmission 143,200 - replaced all trans fluid (12 qts) at home using gravity flush technique 144,000 - leak begins 147,000 - leak stopped