ls1mike
$50 Site Donor 2025
Guys, the 4T65E does not like a flush that late in life. You can say what you want and you can flush your own tranny on your car, but if you do it to a 4T65E that late in life you are asking for trouble.
How to have your trans.fluid changed
- Thread starter doolie92
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First lets define "FLUSH" A line off fluid exchange using the units own internal pump is by no means a "flush" and is probably the safest and best way to exchange the maximum amount of fluid without disassembly,highly recommended even by some OEM like Nissan.
An actual power flush that may force fluid back into the unit through the outlet side with solvents and then fluid is questionable or even dangerous for any unit not just the GM unit mentioned.
I have done off line fluid exchanges on literally dozens of GM FWD units even high mileage ones without any issue whatsoever.
A pan drop leaves to much old fluid in the unit to get the full benefit of a complete fluid exchange.
An actual power flush that may force fluid back into the unit through the outlet side with solvents and then fluid is questionable or even dangerous for any unit not just the GM unit mentioned.
I have done off line fluid exchanges on literally dozens of GM FWD units even high mileage ones without any issue whatsoever.
A pan drop leaves to much old fluid in the unit to get the full benefit of a complete fluid exchange.
ls1mike
$50 Site Donor 2025
http://www.tripleedgeperformance.com/4T65E_Transmission_Info.php
Read his post about flushes, it is the last topic on the page. This guy builds the best 4T65E on the planet period. The guys I race with are running 11's and 12's on his units and daily driving their Grand Prixs and Buicks.
If the OP had 40,000 miles on the car or he knew the history a flush is fine, but at 85,000 his pushing it in a 4T65E. He should do what this guy says, a pan drop and fill.
You are missing my point, in the OPs case, a flush is a bit risky. In other cases, lower miles or in your own car go ahead.
Read his post about flushes, it is the last topic on the page. This guy builds the best 4T65E on the planet period. The guys I race with are running 11's and 12's on his units and daily driving their Grand Prixs and Buicks.
If the OP had 40,000 miles on the car or he knew the history a flush is fine, but at 85,000 his pushing it in a 4T65E. He should do what this guy says, a pan drop and fill.
You are missing my point, in the OPs case, a flush is a bit risky. In other cases, lower miles or in your own car go ahead.
From his site...
" I have NEVER seen a flush machine cause a failure, I HAVE seen an operater of a flush machine cause a failure."
It seems that in his opinion operator error is the major issue.
Again the line off method uses no machine and will cause no damage even on high mileage units in good working condition.
BTW i have one of their units in my own GP.
" I have NEVER seen a flush machine cause a failure, I HAVE seen an operater of a flush machine cause a failure."
It seems that in his opinion operator error is the major issue.
Again the line off method uses no machine and will cause no damage even on high mileage units in good working condition.
BTW i have one of their units in my own GP.
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OVERKILL
$100 Site Donor 2021
Agreed. I just did a cooler line flush (using the tranny's own pump) recently on our newly acquired Focus. It had 230,000Km on the original fluid (135,000 miles roughly). I pulled the cooler line, positioned a drain pan under it and the garbage that was in there came flowing out. When it started to sputter, I stopped, put fresh fluid in it, fired it back up and continued. All of a sudden the fluid went from black to dark red, so I knew all the old fluid was out. Shut it off, topped it up, brought it up to operating temp to verify the level (and topped-up as needed) and the car shifts FAR better than it did when we picked it up.
Completely different from using a flush machine however! Which is the point Trav is trying to make here.
Completely different from using a flush machine however! Which is the point Trav is trying to make here.
ls1mike
$50 Site Donor 2025
Right, my point is the age and miles on his tranny. If he knows it has been done before, he will be fine, if he doesn't, it is not the best idea.
Everyone is just like, Flush it! Which in the OPs case may not be the best choice.
I have also had one of his units. It was in my old 01 Grand Prix, when the Buick poops itself that is when I will get another one.
Everyone is just like, Flush it! Which in the OPs case may not be the best choice.
I have also had one of his units. It was in my old 01 Grand Prix, when the Buick poops itself that is when I will get another one.
OVERK1LL, no filter change, fluid exchange? Thinking about that on the G6. Not sure if I need to do the filter or not.
OVERKILL
$100 Site Donor 2021
Originally Posted By: cp3
OVERK1LL, no filter change, fluid exchange? Thinking about that on the G6. Not sure if I need to do the filter or not.
Correct. Most of the Ford trannies I own (AOD, 4R100, and whatever is in the Focus) have pretty "big" screens for the tranny filters; they'd only be getting plugged up if something is in major-failure mode. In which case changing the filter isn't going to do much.
In my opinion, it is much better to have some clean, fresh fluid in there, without disturbing anything else if I can help it. And that was something I picked up on by other members on this board who suggested it to me in the first place. I cannot remember the names right now to give kudos unfortunately
However, it makes sense.
OVERK1LL, no filter change, fluid exchange? Thinking about that on the G6. Not sure if I need to do the filter or not.
Correct. Most of the Ford trannies I own (AOD, 4R100, and whatever is in the Focus) have pretty "big" screens for the tranny filters; they'd only be getting plugged up if something is in major-failure mode. In which case changing the filter isn't going to do much.
In my opinion, it is much better to have some clean, fresh fluid in there, without disturbing anything else if I can help it. And that was something I picked up on by other members on this board who suggested it to me in the first place. I cannot remember the names right now to give kudos unfortunately
Makes sense to me. Manual says 85k km under severe service or never under regular service. Figured I'd just change it as I do tow a small utility trailer occasionally but don't suspect any problems and wondered if the filter would be ok to leave alone.
It's the top line on the rad that is the output?
Well thanx to yo and the other anonymous members!
It's the top line on the rad that is the output?
Well thanx to yo and the other anonymous members!
I still don't recommend a flush under any circumstances. I can't see the logic on flushing a low miles tranny either, considering the fluid isn't old dirty enough to warrant a flush anyways.
What are you calling a "flush"?
A line off is not a "flush"
A line off is not a "flush"
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Kestas
Staff member
Again, we're having confusion with the vernacular of "flush".
We should be calling it a fluid "exchange" to avoid confusion.
A "flush" to some people means using chemical additive treatment. Others loosely use it to mean "exchange", like flushing a radiator.
We should be calling it a fluid "exchange" to avoid confusion.
A "flush" to some people means using chemical additive treatment. Others loosely use it to mean "exchange", like flushing a radiator.
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