Complete Transmission Flush DIY - VIDEO

[prharper]

Got it off using combo of 12mm strait ratchet wrench with a 7/8 wrench as extension. I think it can be done with a non-ratcheting wrench & same extension too. Was going to try an aray of socket extensions with swivels/elbows next but this got it. Appears cover is for sound dampening - says “silencer” on it. Confirmed 24mm refill plug is under this cover.

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What's the part in the second photo with the 2 loose bolts?

 

[LvCruiserNewb]

What's the part in the second photo with the 2 loose bolts?

See post 136. It's this guy that covers the fill plug on 2016+

 

[colacola]

I ended up getting nearly 5.5 qts from dropping pan and strainer/filter thing (including a little bit of spillage and small blackstone sample bottle harvested). Sharing photos of what my fluid looked like at 70,800 miles. Also check out the level of debris on the four pan magnets. Thats the amount of debris that makes it past the filter/aka strainer. It really is a filter and every bit of atf fluid continually passes through this thing when operating. Kinda wondering what amount of debris may be in this internal filter, so since I installed a new one, I saved old one and ziplocked it - will open it up sometime soon when I have time. New one installed are the pre-install photos below with yellow filter material.

 

[colacola]

I ended up getting nearly 5.5 qts from dropping pan and strainer/filter thing (including a little bit of spillage and small blackstone sample bottle harvested). Sharing photos of what my fluid looked like at 70,800 miles. Also check out the level of debris on the four pan magnets. Thats the amount of debris that makes it past the filter/aka strainer. It really is a filter and every bit of atf fluid continually passes through this thing when operating. Kinda wondering what amount of debris may be in this internal filter, so since I installed a new one, I saved old one and ziplocked it - will open it up sometime soon when I have time. New one installed are the pre-install photos below with yellow filter material.

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Sharing Blackstone sample report for this first Transmission fluid drain/replace @ 70,800 miles.

 

[bloc]

If a fluid exchange is done correctly there is no harm in leaving the pan in place.. Though yes you'd have to drop it if you are curious what's on the magnets.

Even if 2-3qt is left in the pan after initial drain, when diluted with the extra added before pumping it through the transmission and out into the catch pan, what remained will dilute very, very quickly.

I just did this on a 6-spd and did 4 cycles of 3 qts each.. by the end the fluid being pumped out was indistinguishable from the new stuff, despite leaving the pan in place.

 

[colacola]

If a fluid exchange is done correctly there is no harm in leaving the pan in place.. Though yes you'd have to if you are curious what's on the magnets.

Even if 2-3qt is left in the pan after initial drain, when diluted with the extra added before pumping it through the transmission and out into the catch pan, what remained will dilute very, very quickly.

I just did this on a 6-spd and did 4 cycles of 3 qts each.. by the end the fluid being pumped out was indistinguishable from the new stuff, despite leaving the pan in place.

Yeah Im probably overthinking it and sure its fine without dropping the pan but man the metal wear shavings collected on those magnets are something to see - and as you noted, only accessible to clean by dropping the pan - makes me warm and fuzzy at night to have cleaned those off haha- so that the magnets can grab more metal wear bits over time. Pretty sure those are the same metals that show up on the blackstone reports - perhaps clean magnets reduce/lessen that concentration moving fwd vs not cleaning them. Blackstone reports could tell the difference. I dont have two 200’s but did my gx460 first fluid change recently at 114,000 miles and cooper/tin was higher. Different transmission & more mileage but those magnets had more visible shavings to the extent I was worried about them continuing to be able to grab as much debris had they remained uncleaned, as well as higher concentration in the report. I couldnt find a thread where everyone was sharing blackstones but would be curious to compare over time - I guess next one compared vs another 200 without magnets cleaned would be a good comparison. But I think how hard they/I drive is another variable. I dont drive the 200 like an old lady - the gx460 is though. I was also thinking - using more quarts to get more out (vs additional you immediately dump by dropping pan)- is a cost ratio of sorts vs partial expense of new pan gasket - doesnt cover pan gasket expense completely but close.

 

[bloc]

Yeah Im probably overthinking it and sure its fine without dropping the pan but man the metal wear shavings collected on those magnets are something to see - and as you noted, only accessible to clean by dropping the pan - makes me warm and fuzzy at night to have cleaned those off haha- so that the magnets can grab more metal wear bits over time. Pretty sure those are the same metals that show up on the blackstone reports - perhaps clean magnets reduce/lessen that concentration moving fwd vs not cleaning them. Blackstone reports could tell the difference. I dont have two 200’s but did my gx460 first fluid change recently at 114,000 miles and cooper/tin was higher. Different transmission & more mileage but those magnets had more visible shavings to the extent I was worried about them continuing to be able to grab as much debris had they remained uncleaned, as well as higher concentration in the report. I couldnt find a thread where everyone was sharing blackstones but would be curious to compare over time - I guess next one compared vs another 200 without magnets cleaned would be a good comparison. But I think how hard they/I drive is another variable. I dont drive the 200 like an old lady - the gx460 is though. I was also thinking - using more quarts to get more out (vs additional you immediately dump by dropping pan)- is a cost ratio of sorts vs partial expense of new pan gasket - doesnt cover pan gasket expense completely but close. View attachment 3429697

Your transmission is fine. Some of those metal particles are unavoidable as long as you are driving the vehicle, and in the big picture an extremely small percentage of the total metal within the transmission that sees wear. Your lab results bolster that.. don't let the magnets distract from great fluid condition after double the unit averages.

Realistically they had plenty of ability to attract metal left.. you cleaning them won't hurt, but realistically wasn't necessary. Though you didn't know that without taking a look.

 

[colacola]

Your transmission is fine. Some of those metal particles are unavoidable as long as you are driving the vehicle, and in the big picture an extremely small percentage of the total metal within the transmission that sees wear. Your lab results bolster that.. don't let the magnets distract from great fluid condition after double the unit averages.

Realistically they had plenty of ability to attract metal left.. you cleaning them won't hurt, but realistically wasn't necessary. Though you didn't know that without taking a look.

Cool. Thanks for the feedback.

 

[gasman4u]

For a 2021 (likely 2016+) the only gaskets you need are one of each of the following:

35178-60010
90301-15004

The guy on YT (sqotd thread) with the sheckshy voice did a good job on how to run through it using tech stream. The only thing he missed was not using the cooler return line. Which helps save time.

 

[sleepycruiser]

Thanks. The trans fill is a rubber o-ring, according to the P/N?

Now that I think back we did the transfer case and diffs but weren't sure at the time how to do the transmission correctly so the dealer did it ($125, labor only). I supplied parts but if they were wrong the dealer must've either re-used the old parts or just replaced them and not charged me.

So for posterity apparently the correct list is...

Diffs:

• (1) 90430-24003 copper washer for front differential drain plug
• (3) 12157-10010 steel washers rear & front differential

Transfer case:

• (2) 90430-A0003 aluminum washers for transfer case

Transmission:

• (2) 35178-30010 crush washers for transmission drain and overflow plugs
• (1) 90301-15004 rubber o-ring for transmission fill plug

Does the rubber o-ring for the transmission fill plug need to be swapped out when doing the transmission fluid? I plan on doing it the same way as in the video…12 quarts.

 

[gasman4u]

Does the rubber o-ring for the transmission fill plug need to be swapped out when doing the transmission fluid? I plan on doing it the same way as in the video…12 quarts.

I replaced mine FWIW. Whether or not it's needed, I can't confirm. I figure it's easier and cheaper to replace anything that seals fluid than having to have that on the potential reasons something "ain't right."

 

[bloc]

Does the rubber o-ring for the transmission fill plug need to be swapped out when doing the transmission fluid? I plan on doing it the same way as in the video…12 quarts.

It isn’t submerged under normal use so probably ok to reuse if you don’t have one, if it comes out intact. It’s possible it tears or gets damaged. But might as well replace it if possible.

90301-15004 For the 6 spd. They’re cheap. Get spares so next time you don’t even have to think about it. (Same for oil drain, transmission drain, diff drain, etc)

 

[sleepycruiser]

I replaced mine FWIW. Whether or not it's needed, I can't confirm. I figure it's easier and cheaper to replace anything that seals fluid than having to have that on the potential reasons something "ain't right."

It isn’t submerged under normal use so probably ok to reuse if you don’t have one, if it comes out intact. It’s possible it tears or gets damaged. But might as well replace it if possible.

90301-15004 For the 6 spd. They’re cheap. Get spares so next time you don’t even have to think about it. (Same for oil drain, transmission drain, diff drain, etc)

Thanks gents. Might as well while I am in there!

 

[chuckd83]

nm

 

[sleepycruiser]

If a fluid exchange is done correctly there is no harm in leaving the pan in place.. Though yes you'd have to drop it if you are curious what's on the magnets.

Even if 2-3qt is left in the pan after initial drain, when diluted with the extra added before pumping it through the transmission and out into the catch pan, what remained will dilute very, very quickly.

I just did this on a 6-spd and did 4 cycles of 3 qts each.. by the end the fluid being pumped out was indistinguishable from the new stuff, despite leaving the pan in place.

Did you do the drain/fill or the method in the video? Also, I’ve read 12 quarts are needed and other places I’ve read 14 quarts. This would be on a 2011 LC. Thanks!

 

[bloc]

Did you do the drain/fill or the method in the video? Also, I’ve read 12 quarts are needed and other places I’ve read 14 quarts. This would be on a 2011 LC. Thanks!

I did something like in the video, meaning fluid exchange, not a drain/fill.

And I did 15 to get a nice clean 5 cycles of 3qts each.

 

[sleepycruiser]

I did something like in the video, meaning fluid exchange, not a drain/fill.

And I did 15 to get a nice clean 5 cycles of 3qts each.

Thanks for the info. Trying to decide how many I want to change out. You mentioned doing 12 quarts above instead of the 15. I’m sure either will be better than not doing it.

 

[bloc]

Thanks for the info. Trying to decide how many I want to change out. You mentioned doing 12 quarts above instead of the 15. I’m sure either will be better than not doing it.

Ah, yeah. Pretty sure it was actually 15, though I had done 12 twice before. Partly because I had three extra quarts sitting on the shelf for six years.. and now I don’t.

 

[sleepycruiser]

Ah, yeah. Pretty sure it was actually 15, though I had done 12 twice before. Partly because I had three extra quarts sitting on the shelf for six years.. and now I don’t.

Either way…I ordered 12 and that will get me cleaner than it is today. I did the transmission fluid on my GX470 a few years ago, but for some reason the 200 has me nervous.

 

[bloc]

Either way…I ordered 12 and that will get me cleaner than it is today. I did the transmission fluid on my GX470 a few years ago, but for some reason the 200 has me nervous.

You’ll be fine, the no dipstick level check is finicky but seems like a bigger deal than it actually is.