Transmission seems like it's pulling or slipping. Put Lucas treatment in it, now has a display for hot transmission
My car has 444744 miles.
My car has an automatic transmission.
You should not drive the vehicle if the transmission is overheating. You should let it cool and try to lighten the load if you are running it with a tow load. You should also run it out of overdrive to limit overdrive slipping. If temperature warning comes on then limit speed and let cool until fluid cools.
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