It maybe more high temp tolerant, but the difficulty is changing all the oil in the transmission at 1 time. What we used to do with cars that had badly burnt transmission fluid was to do a service & when finished, disconnect the transmission oil supply pipe to the radiator (or cooler), run the car in gear untill the oil flow from the pipe stopped, refill the gearbox & keep repeating the process until the oil ran clean. This would normally consume 20 litres + of transmission fluid. that = $$$$$
If you were to just use the new ATF-DW1 oil during a normal drain & refill method you would probably be looking at 4 to 6 oil changes before you could get close enough to full capacity of ATF-DW1 in the transmission
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