Automatic Transmission fluid flush

[JackOfAllTrades]

I'm totally not agreeing with your 100k mile interval.

You're right, that's well beyond many manufactures suggested intervals. Most say change fluid every 30-50k.

Just always been my experience that tranny fluid nowadays lasts longer than most people think. And I've had a lot of trannys opened up. (Oh, I've built a few hot rods and restored or been part of many Mustang restorations. I also live rural... Don't sit in traffic all day. But, I've also had some rough service trannys that looked great inside when opened up well after 200k miles that never had a fluid change.

Best thing for an automatic tranny is a cooler rated for the load.

-Steve

[Buckmark]

Ant thoughts on Chevy Duramax Allison Transmision flushes???  I may just start a thread getting everyones opinions..
[/quote]
The allison has an external filter which is an easy service
The recommendation is every 50k for fluid service under "Normal" conditions which in a truck means only driving to church.
The recommendation for "Severe" service is every 25k - use this recommendation.

I dont service these units as there is a special adapter for the cooler line for doing the fluid exchange/flush.
The adapter is actually listed under a service bulletin from GM as
A/T Allison cooler line adapter tool/flushing

[jackelope]

the 1st flush machines we got introduced to us 10 years ago at the GMC shop the company advised us NOT to use the trans flush on anything with over 60k miles that had not been flushed previously. they would also offer a warranty on the cooling system if the car had a coolant flush under 30k miles...
crazy stuff...that was back when cars had maintenance intervals on them. all this no maintenance crap is sucking the gravy out of me.

[JackOfAllTrades]

Talk to the army about the DuraIsuzuMini/Allison maintenance intervals. I've heard that the guys hate them.

OK, I'm bashing Government Motors now.. Sorry.   Yes, Ford and Dodge have also had issues with automatic tranny's behind diesel engines..

That's why I have the ZF6spd behind my Power Stroke! 

And those soccer mom minivans.. C'mon..  The Bic lighter is disposable.  So are minivans!


-Steve

[Woodchuck]

the scary thing jackelope is that people buy that garbage. you dont maintain it, it will die. mercedes trans says "filled for life".........sure

[jackelope]

A lot of the chrysler no maintenance transmissions are daimler/mercedes-influenced units. fine if they want to do a no maintenance but they could have at least built them with a F-ing dipstick.

[Woodchuck]

i can usually find the dipstick behind the wheel 

[Buckmark]

Fluid level indicator...
*
They did remove this fine feature to prevent unknowledgable and uninformend people from adding the incorrct fluid to the trans and causing problems.
*
If the manufctures would all get together and adopt industry wide fluids for systems we would all be alot better off.

[Woodchuck]

  but then the aftermarket could wipe em out, gotta keep it in house

[Crunchy]

Ive flushed a tranny or two myself.  Drain pan, remove/replace filter, install pan, add fluid, disconnect return line, start engine briefly, old fluid will come out of return line, add fluid as you go so the tranny doesnt go empty.

[jackelope]

 

[Buckmark]

And the shade trees grow big in his part of the world.

[Crunchy]

It never killed any of my trucks, but probably why I aint no mechanic lol...

[Woodchuck]

buy a lottery ticket, your a lucky man

[6x6in6]

For any of you Dodge truck owners, DO NOT flush the 47RH, 47 RE or 48RE transmissions.
Drain the pan, change the filter at the bare minumum.  Drill and tap the convertor and get rid of that fluid is even better.
47RH thru 48RE covers model years '94 thru early '07 with the CTD engine.
ATF+4 or greater only.