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Sequioa 2023 10 speed transmission oil flush

sanfran10

New member
Joined
Mar 20, 2025
Messages
2
Did my maintenance and was proud of myself for doing it flawlessly (i think) lol. just wanted to share, hope this helps.

First, remove the black cover to see the refill plug then open it. you have to measure then the amount of dirty oil that came out, better to use a container with measurements then refill the same amount. dont ever forget to change the gasket, thenn put back the drain plug. btw just bypass the transmission thermostat. Push on top of that thermostat then put the/a needle to block it. Drain the dirty oil from the return line, then detach the hose in the return line. careful since dirty oil will come out soon as the engine starts. try PRND to DNRP a few timnes to get all the dirty oil out. then just refill wit new oil and do these steps a few times til you only see clean oil. ALWAYS measure the dirty oil that comes out and refill with the same amount. if theres anything i missed, let me know!!
 
This is super helpful OP. I'm thinking of doing it myself as well to cut some costs. Did you do this for preventive maintenance only or were there errors that you saw signs of and realized it's time?
 
This is super helpful OP. I'm thinking of doing it myself as well to cut some costs. Did you do this for preventive maintenance only or were there errors that you saw signs of and realized it's time?
this, plus how many miles does your sequoia has?
 
Did my maintenance and was proud of myself for doing it flawlessly (i think) lol. just wanted to share, hope this helps.

First, remove the black cover to see the refill plug then open it. you have to measure then the amount of dirty oil that came out, better to use a container with measurements then refill the same amount. dont ever forget to change the gasket, thenn put back the drain plug. btw just bypass the transmission thermostat. Push on top of that thermostat then put the/a needle to block it. Drain the dirty oil from the return line, then detach the hose in the return line. careful since dirty oil will come out soon as the engine starts. try PRND to DNRP a few timnes to get all the dirty oil out. then just refill wit new oil and do these steps a few times til you only see clean oil. ALWAYS measure the dirty oil that comes out and refill with the same amount. if theres anything i missed, let me know!!

This is making me want to try this on my own. Thanks for this, @sanfran10
 
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