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.. Oh No...there goes the rep................

definitely Dexron III to avoid shift shock.

I've established that my car is equiped the 722.329 model transmission. I purchased 7 quarts of Mobil 1 synthetic ATF this morning. Are there any links to the exact steps required to perform this procedure properly? I've changed the transmission fluid/filter on dozens of domestic and other foriegn brand automobiles in the past, but never a Mercedes-Benz. I certainly don't want to screw this transmission up.

Thanks,
Chris

The trans in my car isn't all the different from yours. If you have done this before on other cars your in for a surprise. Its a lot easyer on a Mercedes! Drain the pan, drop the pan, change the filter. Your's may have a torque converter drain plug, take a look. When you tighten it back up the pan bolts bottom out so you cannot overtighten the pan. Its a well thought out transmission MB doesn't screw around.

__________________
2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Should the fluid be drained hot or cold? How much ATF do I intially add prior to starting the engine and shifting it through the gears?

Chris

Cold our you will burn yourself. How much does that trans hold? Should say in the manual, mines like 6-7 quarts.

__________________
2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

The trans is spec'd to hold 6.35~ qts, but I'm assuming that they can't all be added prior to starting the car to transfer some of the ATF to the torque converter. There must be some type of "topping off" procedure required isn't there?


Chris

MB CD shows full capacity of 7.1 liters and 6.2 liters (6.55 quarts) for a fluid change. Add 4 liters, start the car, leave in park, add fluid until level is 12mm (.47 inch) below min. mark on dipstick, then move shifter through R-N-D-N-R, pausing in each position for a few seconds, return to Park and add more fluid as necessary.

Don't top off the level until the trans/coolant is up to temp.

Do it warm, or you'll burn yourself.

What I did was measure what came out, and put exactly the same amount back in.

Minus a small bit of spillage I was only about 1/3 a litre too low.

Just refill it completely using that method if you like, and then shift her through the gears while parked up. Back and forth, back and forth, back and forth for a few minutes. Once you've done that, measure it with the dipstick and add more fluid accordingly. If theres too much, just undo the drain plug a little and let some out.

When I did mine I added 6 quarts, let the car idle for a bit, went through the gears a few times (P-2)then topped it off. Make sure to check it the next day or so after you have a few miles on it.

__________________
2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Okay. Thanks to all that have contributed to this thread.

Chris

Hi, newbie here. I'm about to perform gearbox oil change on my new-to-me '97 E300. This is my first car with automatic transmission, so sorry if these question sound silly. I'm very comfortable with VW/Audi/Porsche cars but this is my first MB.

Is the gearbox dipstick reading only valid when it's at full operating temperature?

What should the dipstick show on a properly filled transmission when it's stone cold?

Where is the separate drain plug for the torque converter, is it obvious if you're looking at it? (what the heck is a 'torque converter' anyways?)

TIA

I have the same question for a 86' 420SEL. Is Mobil 1 ATF fine or should I use the MB transmission fluid? Also, how do you drain the torque converter on this model?

Mobil 1 ATF ought to be good for any transmissions before the sealed for life 722.6 era. Torque converter plug is accessed by turning the engine until it makes an appearance. You can use the crank bolt or a large screw driver to lever the torque converter or ring gear around.

__________________
Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles