Have changed my Tundra at every 40,000. no fluid can last 100,000 and the tranny go for the long term.
This.
Google some pictures of the "lifetime" fluid that was the factory fill for Volvo and other European cars. Trust me, it isn't lifetime and to paint with a broader brush, who defines lifetime and what is their definition of such?
Aisin makes some good transmissions in Toy, Volvo and others.
You guys confirmed my feeling, it may be money wasted, but I'll feel better if I start draining and top-off at 60k (Venza). Each drain and refill is about 30% of the capacity.
Now to decide whether to stick with the Toyota/Aisin WS fluid or go with an aftermarket ....I can't find any factual data that says if factory fill is synthetic or dino.
