platinumney

how many bottles of ransmission fluid do i need for my w208

NFSCLK

I was tod my MB that the 208's transmission was a sealed tranny.
So the answer is who cares!

MarcusF

The transmission isn't sealed, but there was a time when Mercedes-Benz didn't feel it had to be serviced. Mercedes-Benz has sinced reversed that position and is now recommending that the 722.6 transmission be serviced.

My local Mercedes-Benz dealer serviced mine. The invoice shows nine quarts of fluid. Many people have had their transmission done where they only require 4 quarts (simply drop the pan and change the filter). The difference is whether the fluid in the torque converter and cooler is changed as well. Later cars such as mine do not have a torque converter drain plug, so other steps are required to drain all the fluid.

Lastly, per the WIS fluid level is temperature dependant.

NFSCLK

Thanks for the info, I was being mislead by MB. I now have 72K on my 99 CLk430. is it to late to change the fluid?

MarcusF

It's never too late. Well, let me qualify that . . . . .

vettdvr

Cool pics what dentist did you take it to for correction

whoover

You should definitely do it. In fact, 75K-100K is the recommended interval now.

But you must find a dealer or shop that can change it via the flush method. It involves hooking up a flushing unit to the hoses that go to the transmission fluid cooler and running about 20 quarts through the system. It's the only way to ensure all the fluid in the torque converter (and metal particles it contains) gets replaced. Call around until you find a shop that knows what you're talking about. And make sure they use MB transmission fluid. It's expensive but is the only acceptable stuff. You'll then be good for another 75K miles. If you can find a dealer that does it, that would be your best bet.

C240LEE

In the UK, the general feeling is to replace the fluid at 60K miles or 3 years. Yes, MB spec fluid is mandatory on the 722.6 box.

Flushing would require the use of more ATF than required. Expensive. Another method would be to drain additional fluid from the pipe going to the cooler at the front of the car, behind front fender. Also recomended that the G/Box sump pan is removed and new filter is fitted, magnet cleaned and refit with new gasket seal.

Refill via the dipstick filler, fit new plug and pin.

MB-Dude

What is the part number for the MB-spec'd transmission fluid for the 722.6?

whoover

This will not drain the torque convertor, which has no drain hole. That is why flushing is the only way to truly replace all fluid.

whoover

You can use either A001 989 21 03 10 or A001 989 45 03 13. The first one is for the 722.6 (5-speed) transmission only; the second one is the later fluid for the 722.6 and 722.9 (7-speed) transmissions.

C240LEE

Yes, same P/Ns that we use in the UK for 722.6. Unfortuneately, our measrurements have changed over to litres. 7.6 capacity for the box, including TC and pipes

C240LEE

Yes, I agree fully with you, or, spin the engine over for about 5 seconds to pump it out (With the sump pan temporaraly refitted to prevent a mess of oil spay everywhere. I pefer to take the hit and allow the 2 litres that remain in the flywheel to mix with the new oil.

Even running it for 5 seconds without oil in the transmission is probably not a good idea.

Cleanliness is the key in this area. Not one spec of grit should be allowed to enter the transmision while the sump is off.

This is a great site. Lots of good info going around from you guys.

benz-tech

HMMM, Lots of opinions going around here, so i'll add mine. I've serviced many of these transmissions and agree that 50-75k is when they start needing service. I do not feel a flush is neccessary unless a lot of debris is found or the fluid looks like poo. cars up to late '99 have a T/C drainplug and anything that old should have all the fluid dumped anyway. otherwise a 4-liter fresh up at 50-75k mi including a filter is just fine. remember the ENGINEERS at MB originally said this stuff would last for a 'lifetime'. one other option- and i did this in my ML, drain the pan only, refill it and run the car for a few minutes(weeks in my case) then do the normal 4L service with the filter, dropping the pan etc.

mleskovar

Great idea...Thanks!!

C240LEE

I think you have got it the wrong way round. Why put new oil into a dirty filter ? i would say, drop the oil, change the filter, refill, run the sedan, then drop the oil and refill.

Why put new oil into a dirty filter ?????????/

mleskovar

That makes more sense!

svt ricco

benz-tech-what pan are you talking about? can you please explain a little more, i don't know anything about engines and trannies. thanks for your help