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this post was submitted on 20 Jul 2025
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Electric Vehicles
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You should be doing transmission service regularly though. Automatic transmissions are often claimed to be good for the life of the car, but regular drain and flush will prolong the life. Coolant flushes used to be more necessary than they are now.
I would strongly disagree with that. Transmission flushes are LARGELY a money grab. Unless your car is shifting erratically, hesitating, jerking or not going into gear it is better to just leave your transmission fluid as is. In fact putting new fluid into an old transmission that is working correctly can actually CAUSE issues.
Unless you have a CVT, which was dying since the day it was born anyway.
And if fresh fluid kills your trans, the friction disks were already toast and being helped along by the crud in the old thin fluid.
Well yeah- when the transmission fails, the car has reached the end of its life!
You should be doing changes per the manufacturers schedule. Most places don't consider it or when you last got one at all when they try to sell it to you.
IIRC, there have been a few car companies that claimed that the transmission didn't need service. Without service the transmissions would fail at about 100k miles; with service they would last 2-3x longer.