Urgent help with transmission fluid swap needed. ugh

[Grug556]

Hey guys did the transmission fluid drain today. Used a measured jug and took out roughly 3.2 Liters. I then refilled it with about 3.8 liters as a slight overfill. Used scan tool and opened stem float valve at 105F. I had 1.2 liters come out?

I checked the stem valve and opened it with motor running. Then I turned it off and oil kept coming out of the stem bolt. Both drain bolts and fill bolts were reinstalled and torqued and appear to not be leaking

No idea what to do here as it looks like to much oil came out? Its toyota WS factory oil. Transmission oil hasnt been changed since it left Japan in 2016, I have around 50 000 miles on it or there abouts.

Any ideas on this?

The oil pan was level as well with use of small bubble level.

Not sure what to do here. Is it possible that to much oil was originally in it or came out? How could to much come out? Also couldnt find original crush washer on stem valve bolt. The one with the 5mm key fitting. I installed a new one and torqued to spec

Any help would be appreciated..Thanks

 

[Humble Leader]

ok - here's what I think might be happening. is it technically correct? I dont know:

the toyota drain pan holds about 3-4 litres. that checks out with the fluid you drained. the system though as a whole will hold much more than that. there's oil in the torque converter and cooler lines (this is my suspicion, I have not verified this for 4runners)

I bet the stem valve also sits below the fill valve. the stem valve drains fluid to the right level and fluid expands when warm. so I suspect you drained extra fluid you put in plus some of what was in the lines. all fluid is released until it reaches spec. more fluid coming out after slight overfill IMO is OK

I think you're OK here assuming there's no leaking occurring which you've verified

 

[Hungryhawk]

I agree - seems correct. Tranny cooler lines certainly can contribute to fluid volume.
Here are my outside the box ideas: Any chance the temperature reading device is out of calibration?
Also tranny pan temp is cooler than fluid temp exiting torque converter. Are you certain which your instrument was reading!
Low tranny fluid from factory have been reported. Seems possible high fluid could also happen.
I read a well done write up compairing instrument fluid temperaure with an IR temp reading instrument of outside bottom of tranny pan- they were close, Within a few percent.
Probably a good idea to get an IR thermometer gun and get familiar withs its use. I checked my kitchen fridge freezer temps when my 33 year old GE was dying. Now have new fridge.

 

[Grug556]

thanks for the replies. I redid it again. Had to do it twice more as the second time due to the over dump wasnt exactly sure how much to add and I was alittle short. Did it a third time and added alittle more and it was fine. You know after three goes that cat is nice and toasty next to those drain plugs. I think the issue was I checked the plug when it was in temp zone, then I couldnt find the crush washer which rolled away, found it but for a few minutes I had to look for it..i stupidly shut the motor off, thinking hey its at level. likely lack of pressure in the system caused lines or torque converter to dump more oil into the pan..resulting in the big fluid surge I saw and the extra 1.4 liters or so that was dumped.

So 6 bottles of ATF later.. seems ok. Initial drive nice and smooth

You guys have a nice weekend. :thanks:

 

[Grug556]

I agree - seems correct. Tranny cooler lines certainly can contribute to fluid volume.
Here are my outside the box ideas: Any chance the temperature reading device is out of calibration?
Also tranny pan temp is cooler than fluid temp exiting torque converter. Are you certain which your instrument was reading!
Low tranny fluid from factory have been reported. Seems possible high fluid could also happen.
I read a well done write up compairing instrument fluid temperaure with an IR temp reading instrument of outside bottom of tranny pan- they were close, Within a few percent.
Probably a good idea to get an IR thermometer gun and get familiar withs its use. I checked my kitchen fridge freezer temps when my 33 year old GE was dying. Now have new fridge.

I didnt use IR gun as its really not accurate. Used scanner with results from Toyota thermocouples in transmission, theres #1 and #2 zones. Both equalized and i dumped at 104-105F

 

[Humble Leader]

thanks for the replies. I redid it again. Had to do it twice more as the second time due to the over dump wasnt exactly sure how much to add and I was alittle short. Did it a third time and added alittle more and it was fine. You know after three goes that cat is nice and toasty next to those drain plugs. I think the issue was I checked the plug when it was in temp zone, then I couldnt find the crush washer which rolled away, found it but for a few minutes I had to look for it..i stupidly shut the motor off, thinking hey its at level. likely lack of pressure in the system caused lines or torque converter to dump more oil into the pan..resulting in the big fluid surge I saw and the extra 1.4 liters or so that was dumped.

So 6 bottles of ATF later.. seems ok. Initial drive nice and smooth

You guys have a nice weekend. :thanks:

lol did you have to go back and forth to the toyota dealer to get more ATF each time or did you just buy all 6 bottles at once???