I have done my seinna and my 4runner by flushing with pump.. Its fast and easy.. I followed this guys method, most of it.. Its fast and easy.. 5-10 mins done for actual flush. About 20mins to setup...

I mentioned here before and guys are saying wrong and this, that.. Whatever it works for me and 50k miles later, no problems... The other ways is just slow and doesn't feel complete. But whatever, its your car.


[Electric PUMP] flush automatic transmission fluid Toyota 4Runner ? Fix it Angel - YouTube



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Btw..if the atf at 160k looks pink/reddish...id saybthe 4r had a atf fluid change of some sort...

6 hours?? why? i think you are misunderstanding how to do a exchange via the cooler line. many people have done it this way including myself & it took all of about an hour. you simply use the outlet port on the bottom of the radiator with a short piece of rubber hose into a measured container, engine pumps out ~2qts & you refill 2 qts.... via the fill hole in the side of the trans. not through a cooling line, that is why it was ridiculously slow, no reason to do that, there is a fill hole on the trans for a reason. ive used a hand pump but a faster way is with a funnel held in the passenger side of the engine bay with a tube ran straight down to the fill hole. takes literally 2-3 minutes to refill 2qts. quick & easy job.

for his 4runner with a dipstick its even easier... you pump out the 2qts the same way described, then simply put a funnel in the trans tube & refill... bet a full exchange would take about 30 minutes including clean up..

The drain plug crush washer has to be replaced. Too cheap to not do, and you’ll see why you should when you remove it. If the older trans pan is similar to the newer one, be very careful putting the plug back in. I accidentally torqued mine to 20 ft/lbs instead of 15 and stripped the threads on the pan.

As Firebirdguy says, is how a did it (learned from him here T4R.org) in my 2003 V6 (with dipstick). Valvoline Max life. 12qts. 45 minutes. Very easy.

I have another (hopefully last) related question to the transmission fluid replacement. Before I begin I checked the transmission fluid via the dipstick. Fortunately, it does look very pink and light in color. Regardless I am going to change it. But I noticed that the current fluid level as indicated on the dipstick seems very high. It is measuring a good inch on the dipstick above the highest 'hot' notch (and the engine is cold). The vehicle is sitting completely level. For those who may be familiar with the dipstick it is measuring up where the dipstick has its second twist (again about an inch above the max hot notch). How problematic is this? Any comments? Is too much transmission fluid a bad thing? Thanks.

You check fluid level with the transmission hot (drive around for 5 minutes or so). Have the motor running, shift thru all the gears on the shifter, Park down to L and back, you don't need to drive for that. Put it in park, leave the motor running and then check fluid level.

if you are checking it the right way with engine/trans fully warmed up & engine running in park, then yes, an inch over the full hot mark is way too much fluid, & if its cold then its even worse. do a drain & fill to the right level or full flush & check the level when done. id do longer than 5 minute drive, when i check my trans temps with a scan gauge, 5 minutes barely gets it to 100*f, fully hot is closer to 140-150. but either way, yours is too full based on the reading you described.

tgis is the right way to check trans fluid, but id do longer than 5 minute drive from totally cold, when i check my trans temps with a scan gauge, 5 minutes barely gets it to 95-100*f, fully hot is closer to 140-150 that takes ~15 minutes of city driving, highway may be a faster warm up.