For context: I have an older Toyota 05. 160k miles. Transmission fluid looks kinda brown and mechanic said I should do a flush and quoted me 300$. I’ve also heard that at some point you shouldn’t change the transmission fluid if it has t been changed in awhile. Why is this?
In: Engineering
Suggestion I’ve heard from my tranny guy is to do a pan drain and refill every 30-40k or less and do the filters every 100k if it has one.
They also recommended that if you have a 150k+ vehicle that’s never had a tranny service/unknown history to replace it in 1/4 or 1/3 of the pan amount over several thousand miles.
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