Is It bad to change transmission oil on a 100,000 miles plus for the first time?

Answer 1

Check the color of the oil on the dipstick. If is still red don't worry about. If its black, or brown, change it, and drain the torque converter if you can.

Answer 2

No if your talking about dropping the pan putting a new filter in it and bolting it up,and filling with fluid.
A flush however may not be good for your car with this mileage and the fact you've never changed it. Gums and varnishes might be in your transmission now and some of the internal components of the transmission may have to rely on those sludges to work now that it's so worn. A flush may destroy your transmission by removing those gums and varnishes.
Flushes are good if you do them every 30000miles and start with a new car. Flushes aren't recommended for high mileage cars for this reason. But a basic drain,filter change,and fill up won't hurt it. It will probably increase the performance of the transmission because it's running off of a guaranteed restricted trans filter

Answer 3

I have personally seen 2 transmissions with high miles fail after changing the transmission fluid. Truth be told, transmissions today are not made as good as transmissions from years gone by. Transmission fluid has a high detergent concentration. When you change the fluid, the detergents start cleaning the varnish and gums from the valve body and other assemblies. When this happens, your transmission is not used to working properly and can fail.

Answer 4

It's ok. A good flush won't hurt it either. That's an old wives tale that comes from people who tried to fix a failing transmission with a flush, and then blamed the flush for it quitting.

Answer 5

What make is the car? Newer GM transmissions are designed to go 100000 between fluid changes is not used in severe service...

Answer 6

30,000 miles max. Make sure you get the fluid in the torque- converter. Any garage will do it correctly at minimal cost.

Answer 7

Yes. Don't do it or you'll find your tranny is slipping. At this point, you don't want to remove the build up because it's actually what's keeping the car moving.

And this is something that could cost a lot of money if you do the wrong thing, so I wish people out there who are hunting for points would keep their ignorant answers to themselves.

Answer 8

"Gums" and "varnishes" are a myth. We do hundreds of
transmissions per year and even the poorly maintained
ones are absolutely spotless on the inside. You should follow
the mfgrs. maint. schedule and procedures or more often
if necessary.

Answer 9

Change the fluid and filter and have the bands adjusted while the pan is off.

Answer 10

The recommendations on newer models is every 50,000 miles, so hurry up and do it!