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  #1  
Old 11-07-2014, 01:06 AM
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Back to back tranny flush?

So I did a successful tranny flush on my 4.8is 6HP26 tranny after 140k miles and replaced the mechatronics sleeve and the filter. It made a huge difference. But I know that I only got about 6 out of 9 or 10 quarts of the old fluid out. That's 60%, but I'm thinking if I do another flush and filter right away, i'll then be at 80% new. Hoping that it gets me to like new condition! There were no metal flakes or buildup on the magnets the first time around believe it or not, but it was shifting horribly. I also updated the software with WinKFP which made a huge difference. Thoughts on the second flush? Has anyone done this with good results?
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Old 11-07-2014, 01:44 AM
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Since you've done it already anyway, There shouldn't be any problem doing it again in like 200-500 miles, only this time, imo there's no need to change the filter.
Did you have a lift?or had somebody do it for you?
Only thing that keeps me from doing it myself is a lift.Im at 107k miles
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Old 11-07-2014, 01:57 AM
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I did it on the floor with the X on four jack stands. Not ideal, but it did the trick. Was a little messy but not too bad. I had my friend sitting in the car shifting gears while I pumped. He was also watching the analog values for the tranny in INPA on my laptop and shouting the fluid temp to me as it went up. You have about 5 minutes until it hits 50 degrees Celsius and then you have to close it up. It was enough time, but was a close call. If I didn't have to switch the fluid pump to a new bottle 5 times then it would have gone faster. Line up everything you need right next to you on the ground and you should be fine. I'm changing the filter again because I'm OCD and I got it cheap from ECS tuning, they were having a sale. Unnecessary for sure, but why not.
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Old 11-07-2014, 12:26 PM
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I changed my sleeve, filter and fluid at 100k and then did another "dump and fill" 5k miles later. no ill effects or weirdness going on with mine! I used RL D4 and the only reason I did the 2nd "dump and fill" was because I ended up getting 2 cases of the fluid off CL for $20 / case... couldn't pass that deal up!
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Old 11-07-2014, 03:14 PM
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Quote:
Originally Posted by jcorreanyc View Post
.....I also updated the software with WinKFP which made a huge difference....
What is the version of the software update you did?
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