Why would a TF999 in a YJ leak out fluid from the vent when its not showed as full. I have an external vent, so I know it coming from there. The dip stick shows 1 quart low. I put a quart in it and most of it blew out the external vent. made a mess and a lot of smoke. I used ATF type 4 fluid.
If different fluids types are mixed, can it cause a swelling of the fluid or foaming? I know water can, but I have not been in water. The current fluid is 3 years old with maybe 5K on it.