My son’s 98 Mazda 6 has a rebuilt transmission (2nd rebuilt transmission,) that has been OK for about a year, but now the transmission fluid appears to be way overfilled, which makes me think it isn’t circulating, as he hasn’t added any. Given that it has such a bad transmission history, does this sound like a quick fix, or one more reason to junk it? Thanks!
Check the engine coolant level, see if it is low or if it is discolored. A leaking cooler will cause the ATF to mix with the coolant. If this is the case, the transmission must be removed and disassembled and vatted to get all the coolant out. Engine coolant will destroy fiber sealing rings and clutch friction elements inside an automatic. The radiator will also have to be replaced.