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I questioned my local dealer about use of plug #19 to fill the transmission. They came back with essentially the same procedure posted above which says to fill through the drain plug in the oil pan. The drain plug is M10 X 1 X 9. In the Mity Vac refill kit the M10 X 1 is adapter MVA585 which they call a VW ATF refill adapter. My dealer further confirmed #19 is inaccessible when the transfer case is installed!! doh.
Last edited by r553; 07-26-2017 at 08:49 AM.
Reason: #19 is inaccessible
I questioned my local dealer about use of plug #19 to fill the transmission. They came back with essentially the same procedure posted above which says to fill through the drain plug in the oil pan. The drain plug is M10 X 1 X 9. In the Mity Vac refill kit the M10 X 1 is adapter MVA585 which they call a VW ATF refill adapter.
In the parts diagram, #19 is between the transmission and transfer case = inaccessible with either installed in the car!
I didn't see where Porsche was listed in the Ravenol T-WS applications. There will still be a substantial amount of original ATF left in the torque converter. I plan to use the Toyota Type 4 fluid.
I don't think the Toyota Type 4 would be the best choice for the V8 S and Turbo owners.
Diesel uses an A59.04 transmission type; S uses A48.04, turbo uses A48.54, base auto uses ***.04.
Removing the drain plug and the plastic riser will drain about 4 liters. About 2 more liters drain when removing the pan, making it 6 liters total that can be removed without opening the cooler lines. That's a little less than half the capacity. To deal with this I drained 6 liters, refilled with 6 liters of fresh fluid, then ran the trans for a while, then re-drained and re-filled again with 6 liters. I wonder how much more can be drained from opening the cooler lines... they were just too difficult to reach to make it worth the effort as the forward driveshaft from the transfer case is in the way.
The ECS Tuning 3 liter Filler System makes the job a lot easier, as it includes a quick-disconnect fitting that threads right into the pan (their version of a VAS 6262/2). It's so easy to drain and refill with this tool that I'll likely do another 6 liter swap in 5,000 miles to get more fresh fluid in there.
An infrared meter is not accurate especially if you measure the low point of the oil pan - it's about 6 degrees C off from what the PIWIS2 computer system reports which means if you wait for 40 on the infrared meter at the bottom of the pan, it's really around 46-48 degrees C in the trans.
Is the original Porsche trans fluid red to start with? If so, at 96K miles, mine was brown and opaque and the magnets were full of tiny shavings that looked like clay.
Removing the drain plug and the plastic riser will drain about 4 liters. About 2 more liters drain when removing the pan, making it 6 liters total that can be removed without opening the cooler lines. That's a little less than half the capacity. To deal with this I drained 6 liters, refilled with 6 liters of fresh fluid, then ran the trans for a while, then re-drained and re-filled again with 6 liters. I wonder how much more can be drained from opening the cooler lines... they were just too difficult to reach to make it worth the effort as the forward driveshaft from the transfer case is in the way.
The ECS Tuning 3 liter Filler System makes the job a lot easier, as it includes a quick-disconnect fitting that threads right into the pan (their version of a VAS 6262/2). It's so easy to drain and refill with this tool that I'll likely do another 6 liter swap in 5,000 miles to get more fresh fluid in there.
An infrared meter is not accurate especially if you measure the low point of the oil pan - it's about 6 degrees C off from what the PIWIS2 computer system reports which means if you wait for 40 on the infrared meter at the bottom of the pan, it's really around 46-48 degrees C in the trans.
Is the original Porsche trans fluid red to start with? If so, at 96K miles, mine was brown and opaque and the magnets were full of tiny shavings that looked like clay.
Good info. Can you post a link to the ECS filling system?
If you have an iCarScan you can also read out the transmission fluid temperature that is reported to the ECU.
As far as color - it certainly wasn't brown and opaque when it was new. Most ATF is either red or amber in color when new. The brown is wear particles from the multiple multiplate clutches in the AT. Not surprising at that mileage. And burned smell?
My 958 turbo s is going in for a new transfer case in 10 days. It only has 36k on it, but after reading this thread I figure I might as well request that the atf fluid be changed as it can only be done when the xfer case or transmission are out. Any reason I shouldn't have it done?
My 958 turbo s is going in for a new transfer case in 10 days. It only has 36k on it, but after reading this thread I figure I might as well request that the atf fluid be changed as it can only be done when the xfer case or transmission are out. Any reason I shouldn't have it done?
Who told you this? That's BS. There are quite a few threads here on changing the transmission fluid - and it's done all the time - no disassembly required.
Having the AFT changed isn't a bad idea - but at 36,000 miles it seems a bit premature. The earliest recommendations I've seen are 60,000 miles and I believe Porsche spec's 120,000 mile changes.
Who told you this? That's BS. There are quite a few threads here on changing the transmission fluid - and it's done all the time - no disassembly required.
Having the AFT changed isn't a bad idea - but at 36,000 miles it seems a bit premature. The earliest recommendations I've seen are 60,000 miles and I believe Porsche spec's 120,000 mile changes.
I think I misunderstood post 17, it looks as though the atf can be filled though and hole in the drain plug. Given I have ptv, when should I get f&r diff fluid changed?
Don,
Could this opus be moved to the 958 DIY thread?
Thanks,
Rob
I think it's a tad confusing for a DIY. I'd prefer that people perhaps edit their posts here - if it's unnecessary (ie - found out differently later) - mark them "DELETE" in the post - and PM me - I'll remove them.
If we can condense it down to a single page of posts that would be a very good thing, and I could copy it over to the DIY section.
07-23-2017, 12:37 PM
