BoomerBob
New member
Thanks, I bought 6 quarts of ATF, planning on buying more after seeing how burnt that is and anticipating how many flushes I'm going to do.
It takes 3 gallons to do a complete flush using a low pressure pump to push the fluid in as the transmission pumps it out. I just let the car run in neutral (see Timmy's video on this) as I run the pump switching from one gallon jug to the next until I see clean red fluid running out the return line into a catch can. Clear tubing is a must on this project. I used the $18 Walmart pump I bought online listed below. Being low pressure means it isn't doing a high pressure flush which might dislodge debris which can cause problems. It just does what the trans normally does in circulating the fluid. I usually over pump the old fluid out so I generally have to add another quart or so. On these 4Runners I am able to drain the one or two quarts of fluid out of the pan first to make it easier to exchange the fluid. I also installed an inline Magnafine trans filter on the return line when I was done because I didn't drop the pan, clean the magnet, and change the screen/filter. That's a project for another time.
https://www.walmart.com/ip/Zimtown-...ange-Scavenge-Suction-Transfer-Pump/189861237
YouTube