[T3] My final question about the auto trans fluid level.

[William J]

----- Original Message ----- 
From: "Jim Adney" <jadney at VWType3.org>
To: <type3 at vwtype3.org>
Sent: Tuesday, March 22, 2016 4:03 PM
Subject: Re: [T3] My final question about the auto trans fluid level.


> On 22 Mar 2016 at 14:15, William J wrote:
>
>>  I'm well aware the engine has to be running.and the fluid warm and 
>> realize
>> the fluid must circulate and fill every passage so I shift it from drive 
>> to
>> reverse.a few times .
>
> Okay, I thought we'd been down this road before, and you'd made it
> clear that you were doing it right. So i'm stumped. If I had to
> guess, I'd say that letting the dipstick sit there awhile let it
> accumulate some splash from inside the AT, but I really have no idea
> how active things are in there with the engine idling.
>
> What happens if you do this test:
>
> Insert the stick and remove it quickly: get a low reading
>
> Insert the stick and let it sit awhile: get a high reading
>
> "Now what happens if you repeat the quick insertions a few times? Do
> you again get all (or mostly) low readings? If so, I'm gonna guess
> that letting it sit accumulates splash. If they are all high after
> the first high reading, then it's just that the fluid has drained
> back to its normal level in the sump."

 If I wipe the stick and pull it right out which I did three times it is 
always at the low mark . If I wipe and insert and wait a few seconds it's at 
the high mark. I only did that once because if it stayed at the low mark I 
would have added more fluid. . I did this all within a few minutes and never 
moved into drive or reverse or reved the engine . I just let it idle at 900 
RPM in park .

 When I first filled after the pan was off I put 6 pints in and then checked 
it a few times and couldn't tell so I drove it 3 miles and pulled the stick 
and it was just below the low mark so I added 6 oz more and all the time it 
was running and I waited so the fluid would drain down the filler tube to 
get a true read. This didn't bring it up much so I added another 6 oz and 
waited . I t was not until I added a pint or 16oz over the 6 pints 5 oz 
Bentley states that it finally read to the high mark and the full width of 
the stick which it always seems to do up to or slightly below the low mark . 
I don't consider fluid covering less than half the width of the stick an 
accurate reading.  Right now I have 7 pints 5 oz in this trans .

 William
>
> Once filled, the various passages in the AT don't drain back down as
> long as the engine is running, but I'd expect some dripping/draining
> from the walls, etc that would occur after a drive or possibly after
> reving the engine. Frankly, I wouldn't expect it to make this much
> difference, so this leaves me puzzled.
>
> I CAN tell you what happens if the level gets too low. At some point
> there's not enough ATF to drive the hydraulics, so the AT will start
> to have trouble getting into gear and pulling the car. This marginal
> operation is clear enough that you'll know to add ATF well before any
> damage is actually done to the AT.
>
> -- 
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
> _______________________________________________
> VWType3.Org mailing list - type3 at vwtype3.org
> To unsubscribe or change subscription options, visit:
> http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> If you need more help, contact: gregm at vwtype3.org
> 


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus