Trans fluid question
#1
AudiWorld Senior Member
Thread Starter
Trans fluid question
Finally getting around to do my trans fluid. I plan to do the fluid twice and the filter once as has been mentioned.
As has been posted: do the fluid/filter first, drive car to circulate the fluid that didn't drain and then do the fluid again.
Does it make any sense to change the fluid first, drive it to circulate the fluid and then change the fluid and filter?
Maybe I'm over thinking this?
TIA
As has been posted: do the fluid/filter first, drive car to circulate the fluid that didn't drain and then do the fluid again.
Does it make any sense to change the fluid first, drive it to circulate the fluid and then change the fluid and filter?
Maybe I'm over thinking this?
TIA
#2
AudiWorld Super User
Finally getting around to do my trans fluid. I plan to do the fluid twice and the filter once as has been mentioned.
As has been posted: do the fluid/filter first, drive car to circulate the fluid that didn't drain and then do the fluid again.
Does it make any sense to change the fluid first, drive it to circulate the fluid and then change the fluid and filter?
Maybe I'm over thinking this?
TIA
As has been posted: do the fluid/filter first, drive car to circulate the fluid that didn't drain and then do the fluid again.
Does it make any sense to change the fluid first, drive it to circulate the fluid and then change the fluid and filter?
Maybe I'm over thinking this?
TIA
In doing this, I prefer to start cold with pan pull, having let it all drain down--or no more than time it takes to get up on ramps that I use for it. You are also working near the exhaust and cats, so don't want that full running temp hot for the pan work. Then I pull pan, replace filter and close back up. "Close back up" sounds easy BTW, but the paper gasket Audi uses is really fiddling and hard to position correctly as you try to insert early bolts. A helper can be good--I don't have one so suffer solo or even use my contorted foot or knee to try to hold pan and get a bolt or two back in. Gasket invariably starts to get oily too no matter how well you let it drain.
I then go on to my two+ cycle fill. If you want to flush it a little more, on first fill, start by getting it filled with engine off. Then start it and immediately pump in everything you can. Forget the final level setting procedure on the first pass; basically as it warms to 40C it would overflow the fill hole (that is open for the level setting procedure, but now closed the way I do it). Having a bit more in right for cold start just improves dilution, and what overflows once started will be that mix of old and new. Can do the same on second pass too, but now open the fill port at 40C to get the final level correct. It will drain back out maybe half a liter or so if you pumped full with engine running and back to at least cool. Obviously in between either leave it overnight, or plan a couple hour break between the two fills for cool down.
Last edited by MP4.2+6.0; 05-25-2018 at 02:32 PM.
#3
AudiWorld Senior Member
I plan on just draining the overflow with engine off, starting engine and topping off once warmed up. This should be several bottles to top off.
Did mine 30,000 ago, get filer and 7 bottles of fluid. Fluid looked fine, think P.O. may have done it.
Did mine 30,000 ago, get filer and 7 bottles of fluid. Fluid looked fine, think P.O. may have done it.
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