Not really, Dragonair.
I do it every 15,000 km (which may be an overkill).
The frequency of tranny oil change is really a personal preference (provided that you don't go over the factory recommended interval). Also, it depends on the method of oil change. Normally, I would say at least 25% of the old oil would stay in the transmission (esp. torque converter), unless they have a machine to flush the whole system. But I doubt the places you mention would have those machine. |