CookieRoe
Senior Member
According to my math, three drain n fills will get about 50% new fluid in circulation through the system.
Yep. That's why I had the dealer do it. They use Toyota ATF (WS, I can't remember) and it comes with a guarantee (meaning if they blow up your tranny, it's on them, LOL). Had it done a few years ago and again (to add Shudder Fix when I had the shuddering problem...... gone now) last year. Also, the dealer gets ALL the old fluid out. I still want to learn how to do it myself if I had the time. Service cost $250-275. Worth it to me.