Transmission

[JFP in PA]

The Tiptronic fill is is on the bottom, it requires a special fill tool.

[jcb986]

Personally I haven't found it yet. Still looking. But filling at the bottom makes no sense either.

[JFP in PA]

OK, tiptronic service 101: There are two plugs on the bottom of the trans, one is a drain plug, the other is a fill opening that has a riser tube that extends upward. To refill the Tip, remove the fill plug, insert the special upside down "J" tube fill hose so that the bend of the J is over the top of the riser tube, pump in the ATF until the excess starts to seep down the riser tube. Reinstall and torque the plug; Miller time....................

[Lil bastard]

Originally Posted by JFP in PA

OK, tiptronic service 101: There are two plugs on the bottom of the trans, one is a drain plug, the other is a fill opening that has a riser tube that extends upward. To refill the Tip, remove the fill plug, insert the special upside down "J" tube fill hose so that the bend of the J is over the top of the riser tube, pump in the ATF until the excess starts to seep down the riser tube. Reinstall and torque the plug; Miller time....................

Agreed, but you should never swap the fluid without also swapping the filter. Doing so will lead to premature death.

Also, ATF expands tremendously when heated. In order to properly fill it (there is no dipstick), you need to preheat the fluid. If you don't, you will have overfilled it once it comes up to operating temp.

Cheers!

[JFP in PA]

Totally agree on both points; however, the original posted question was how do you fill the Tip, which is what I was trying to get people to understand......you do it from the bottom, an answer that seems to cause some consternation.............

[jcb986]

I thought you where suppose run the engine for awhile to heat up it to a certain temperature then add more until it runs out, then quickly run it thru P, D, P, D then top it off.

[Lil bastard]

Originally Posted by jcb986

I thought you where suppose run the engine for awhile to heat up it to a certain temperature then add more until it runs out, then quickly run it thru P, D, P, D then top it off.

Well you're correct.

But the temp range given for a proper fill is pretty narrow. It takes a while for the temp to rise, but then, it goes up like a rocket. You cannot let the temp creep higher than the given range and still get an accurate fill either.

That's why I propose pre-heating the fluid, especially for a 1-man job. Once that tranny starts to pressurize, excess fluid will just pour out. If you're jumping from the car to get back underneath and add more, it's almost a losing battle, not to mention the expensive fluid you end up wasting. If you have a helper, it's much easier to do it the way you describe.

Even pre-heating the fluid, I lost more than a half litre while I was ratcheting the selector.

Cheers!

[Lil bastard]

Originally Posted by JFP in PA

Totally agree on both points; however, the original posted question was how do you fill the Tip, which is what I was trying to get people to understand......you do it from the bottom, an answer that seems to cause some consternation.............

We're cool

Unless you've actually done it, or seen the cutaway in the factory manual, I understand that filling from the bottom does seem counterintuitive, but nevertheless, that's how it's done.

Cheers!