DIY: Full Flush for Automatic Transmission

keep threatening to, but too lazy. any clue how much Blackstone needs? I only kept about a 4 ounce sample. mine was very dark after >100k.

 

No clue Greg, but atf does expand as it heats up, so your experience seems to make sense. Sounds like you should be good to go.

 

I am not sure what they charge. I imagine $30-$35 though. If you would get yours done I will to. I did my change at 60k so we could kind of compare the differences.

 

B.S. $30 now or $3,000+ later. Your choice. IMHO

 

Its your truck, but I would recommend flushing it. It's really not that hard to do yourself. I definately wouldn't recommend leaving it in until it starts malfunctioning.

 

Can you recycle the AT oil like regular oil at an auto parts store? What's the concensus about a full flush resulting in pushing junk into the valves but a pan flush of 3 quarts being safe?

 

Yeah i tried to recycle it at walmart and they told me no, but then i went to Autozone and they took it and dumped it in the same bin as they do the oil, so i don't think it makes any difference. As far as pushing stuff into the valves i don't know for sure, but i would think it would be fine.

 

As I understand it - a trans flush-exchange is what to avoid as it stirs and loosens up crap which then clogs valves. A drain and fill is preferred as it does not loosen up any debris and adds fresh additives. I would rather be safe then sorry.

 

Just do it yourself. I did this on my wife's Envoy and is very similar on the steps that I did. The wife no longer has the Envoy and a 2011 Highlander took its place. I wonder if it would be similar... but it will be for a while since the Lander is spanking new

To the OP, well done. Your steps on how to do it give the impression you had fun doing it.

 

I call BS in a good way. Unless the tranny is for a F16 fighter jet then I'd leave it to the pro's but if you let the tranny run for a minute or so while you are draining/filling the tranny, it will not be hurt. I did the same thing on an Envoy with 81k miles on the clock and it ran smooth w/o issues. The OP is doing PM and that is a good thing. I'd say do it.

 

35???

 

Great write up! I'm on vacation next week this is going to be on my to do list.

 

Actually ended up being $25 I didn't get the extra TAN (of whatever its called for ATF) test done. I think it was an extra $10, but there was some confusion with whether mine had been changed before or not. Here is the link to my report.

http://www.tacomaworld.com/forum/2n...stone-transmission-fluid-report-61-000-a.html

 

Yup, I saw your response on the other thread as well and don't necessarily disagree but then again not a 100% certain. I love to hear others experience with the full flush and what if any issues came up followig it.

 

just for the fluid

 

flush my transmission today wanted to thank you for this write up I kept my computer in the garage and went step by step and it worked out perfect.....my old transmission fluid was like black =/ should have done it 30,000 miles ago

 

subbed.

 

I completed this today. My truck has 85k on it and this is the first service completed on its transmission. I was very excited and thankful to find this thread. I tow a 5000lb travel trailer so I want to do my best to protect the drive train. The fluid I removed was very dark but smelled just like the new fluid (I used OEM). IMO color is not a good indicator of fluid life. Well used fluid always smells much different than new. All this being said, I would not be afraid to change it every 100k (especially if you are not towing).

btw: it was over serviced from the factory by 3/4 quart

Thanks to Mountain Lion for an excellent "how to"

 

thanks for the info.

 

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