Dexron VI transmission fluid after 32k miles

[truckguy82]

So I'm doing a partial flush on my transmission fluid on my 2014 6.2 with a 6l80.

 

I'm sucking it out of the dipstick tube. I got almost exactly 4.5 quarts out.

 

32k miles

 

Left side is fresh AC delco dextron vi (same fluid as factory)

Right side is what came out of my truck (which I thought was kinda pink when looking at the dipstick)

 

Wow!

[joshc64311]

Wow is right. I'm doing this Saturday, what did you use to get the fluid out?

[truckguy82]

This is what I used to pull it out, worked perfectly and was extremely easy. Just a few pumps and it creates a vacuum in the tank. 10 minutes later and a few pumps here and there to keep the vacuum and it started pulling air out.

 

https://www.amazon.com/America-2000-LiquiVac-Changing-System/dp/B0002AJR8E

 

Here is the cheapest place on planet earth to buy dextron vi

https://www.amazon.com/ACDelco-10-9395-Dexron-Automatic-Transmission/dp/B01EKMGG92

[truckguy82]

One more caveat, I did have a stuck thermal bypass valve. My truck would see 220-230 degree transmission temps after driving in 45 minutes of city traffic. I would say all in all the truck spent 1% of its life at those temps since it took 45 minutes to get there, and its not often we drive in city type traffic for 45 minutes straght.

[joshc64311]

This is what I used to pull it out, worked perfectly and was extremely easy. Just a few pumps and it creates a vacuum in the tank. 10 minutes later and a few pumps here and there to keep the vacuum and it started pulling air out.https://www.amazon.com/America-2000-LiquiVac-Changing-System/dp/B0002AJR8E

Thanks, how's it shifting?

[truckguy82]

Thanks, how's it shifting?

I just drove it around the block after I did that, difficult to tell at this point.

 

To any onlookers looking to do this. The transmission holds around 12 quarts of transmission fluid. I only pulled out 4.5 quarts. I just emptied a gallon back into it.

 

My plan is to drive it around for a few days and let the fresh gallon circulate with the old stuff. Then do it again.

 

If it still looks really bad I'll do it a 3rd time.

 

FYI need to get the transmission up to 190 degrees for it to fully circulate, otherwise the thermostat wont allow flow to the tranny cooler.

 

It's easier to do a 4 quart flush then it is to change the engine oil. Was so easy

[joshc64311]

I just drove it around the block after I did that, difficult to tell at this point.

To any onlookers looking to do this. The transmission holds around 12 quarts of transmission fluid. I only pulled out 4.5 quarts. I just emptied a gallon back into it.

My plan is to drive it around for a few days and let the fresh gallon circulate with the old stuff. Then do it again.

If it still looks really bad I'll do it a 3rd time.

FYI need to get the transmission up to 190 degrees for it to fully circulate, otherwise the thermostat wont allow flow to the tranny cooler.

It's easier to do a 4 quart flush then it is to change the engine oil. Was so easy

 

I was just going to ask that. Keep me posted as I was planning on doing the same.

[sdeeter19555]

I wonder if that's because of the thermostat? I drain mine at 25k intervals and it looks the same as what I pour back in...but my trans rarely gets above 160, let alone 190.

 

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[gone_fishing]

The first time I pulled transmission fluid it looked as dark as yours. This was around 65,000 miles though. Took me 3 drain and fills before it turned nice and red. This is what I used: http://www.harborfreight.com/multi-use-transfer-pump-66418.htmlI had to buy some 3/8" vinyl hose as the hose that comes with the pump isn't rigid enough to push down the dipstick.

[joshc64311]

Anyone do there tcase, I did mine last week at 30100. it was darker than what truckguy82 pulled. Has anyone else experienced this?

[newdude]

I wonder if that's because of the thermostat? I drain mine at 25k intervals and it looks the same as what I pour back in...but my trans rarely gets above 160, let alone 190.

 

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

Pretty much. The 6T front drive units look the same after 20-40k miles. They run hot as well (170-200 is considered operating temp). GM calls it normal for the fluid to discolor on those units.

[sdeeter19555]

Anyone do there tcase, I did mine last week at 30100. it was darker than what truckguy82 pulled. Has anyone else experienced this?

Is this one of the auto 4wd deals?

 

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[joshc64311]

Is this one of the auto 4wd deals?

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It has the auto option?

[truckguy82]

So i drove around a bit. And I pulled out another gallon.

 

Left is original, middle is after 1 gal of new stuff, right is new stuff

 

Almost no change from left to middle, shizer

[truckguy82]

I'm officially out of wine glasses my wife won't let me ruin