oil of hydromatic transmission mixed with water in radidater , i changed thise mix and put new oil . but my car not speed (nissan sunny 1994)
The entire system needs to be power flushed by a mechanic that has the machine to do it. It is possible that permanent damage may have already occurred though.
Most likely the transmission cooler inside one of the radiator end tanks has sprung a leak. A mechanic should be able to remove the cooling lines from the radiator and pressure test the transmission cooling tank inside the radiator.
