2007 Toyota Prius Q&A
2007 Toyota Prius Question: How to change transmission fluid
Change fluid - Visitor
You need a flush machine to really change an automatic transmission's fluid. You can't get the fluid out of the torque converter which is half the total volume. You need a flush machine that hooks into the trtans cooler lines and exchanges the fluid quart for quart. A drian and refill is like finding a gallon of sour milk in the frig and emtpying half of it and filling up with fresh milk. It's still sour. - Hal...
The local dealership wants to charge me close to $300 for both a brake fluid change and changing the Transmission Fluid. I ascertained that the correct fluid type to use is ATF 4 (synthetic), but ...
the dealer is recommending a 170 flush, do I really need a flush or will a fluid change be just as good?