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Question:

Should I flush my automatic transmission?

My car is in at the dealer for 105,000 mile service. They say my ATF is dirty and I should flush it. Are they ripping me off? The net has wildly varying answers, from sure, it‘s a good idea to Never do this it will kill your transmission!

Answer:

in case you have an present CAI, then the excellent component you're able to do is in basic terms isolate the area of the air clear out from engine compartment air, and ensure that the boxed off section has a ideal beginning that vents in exterior air. I easily have 2 CAI's on 2 autos - one terminated the CAI close to the driving force's area fender - I hence boxed it off with sheet steel. the different unit seems greater remoted so I left it as is. The longer tube/ducting shouldn't impact your CAI overall performance see you later as its comfortable - any ridged flex pipe will basically introduce restrict if its all closed ducting .
This makes me nuts! There's getting to be to many vehicle manuals saying do not flush the transmission. We know 3 people who have had this done and all 3 within a month had to have tranny rebuild. Yes 3 different locations and 1 being a Tranco Transmission. We are at 40,000 on our motorhome, which the manuel says to have tranny flushed at 30,000. Fluid is still clear.
You don't mention make, model, or year, which are crucial. Essentially all Honda transmissions must never be flushed, only drained and filled. Some other transmissions must be flushed every 30K miles. Do what the owner's manual says - if it says flush, then flush. If it says change, do not flush, just drain and fill. Personally, I have never had a transmission that was supposed to be flushed. The closest I had was an AW-70 transmission in a Volvo that had a procedure for self-flushing. Never had an auto transmission failure in 40 years, either.
I asked my husband about this, he's a mechanic. He says that if it has transmission problems it can kill the transmission. If there are no problems with it can be really good for it. He says you should definately go for it if there are no known problems with the transmission.

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