722.6 FLUSH SERVICE
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Joined: Jun 2013
Posts: 115
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From: Tijuana Mexico
99 E320 W210
722.6 FLUSH SERVICE
so i just ordered all the stuff for a transmission quick flush. Probaly will do project next week, any tips? HAS anyone out there ever changed the fluid out of a transmission that has never been serviced in 225000 miles? hope all goes well. i hear mixed responses to do it or not do it. Im only doing pan and filter, no torque converter. Thanks for any responses
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Joined: Oct 2007
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From: SoCal
98 Brilliant Silver E320 Wagon
Be sure to check the bottom of the pan for debris. A little fine particulates is normal but large pieces of metal or graphite indicate excessive wear or damage. Depending when in the year your car was produced it may/may not have a drain plug on the torque convertor. Once the wheels are off the ground you can rotate the transmission and look for the drain plug (same size as pan drain). I would suggest draining it if it has the plug. You'll get about 4 qt from trans and 4 qt from torque convertor.
The transmission is cooled via a radiator. If the car isn't experiencing over-heating you should be fine. Be sure to use the MB approved AFT. Plenty of DIY's online for this service.
The transmission is cooled via a radiator. If the car isn't experiencing over-heating you should be fine. Be sure to use the MB approved AFT. Plenty of DIY's online for this service.
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,564
Likes: 19
From: SoCal
98 Brilliant Silver E320 Wagon
Thread Starter
Member
Joined: Jun 2013
Posts: 115
Likes: 0
From: Tijuana Mexico
99 E320 W210
Just completed my trans tune up today
.Was easier than I thought, took only like 2 hours or less, draind 3 1/2 liters. Only remember seeing like 5 tiny specks of metal not bad I don't think for a transmission with 225000 miles that hasn't been serviced. Next time im going to do torque converter and pan It should be easy now that the filter is new. All I gotta do is drain and fill right?? 
.Was easier than I thought, took only like 2 hours or less, draind 3 1/2 liters. Only remember seeing like 5 tiny specks of metal not bad I don't think for a transmission with 225000 miles that hasn't been serviced. Next time im going to do torque converter and pan It should be easy now that the filter is new. All I gotta do is drain and fill right??
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MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,564
Likes: 19
From: SoCal
98 Brilliant Silver E320 Wagon
You now have about a 50% mixture of old and new ATF. Emptying the TC will get you to 75%. Draining 4qts three more times will get you to about 95% but will require 20 qts vs 8.5 qts when you do it all at once. Which is why I recommended doing both together. This is how those without a drain plug on the TC must do it.
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