![]() Do this until your fluid starts getting pretty darn red. For getting the old fluid out and pumping the new fluid in, I just start the engine and let the transmission's fluid pump do the work. This takes between 12 and 14 litres of ATF, including dropping the pan, replacing the filter, replacing the electrical connector plug, and exchanging the fluid 3 liters at a time. The method that I use is to do a full exchange. Do that, and the 722.6 transmissions in our cars should last basically forever. The revised (from M-B) interval is every 60,000 km, or 39,000 miles. That bit about the "sealed for life" is something that even M-B themselves backed off of, due to just how stupid it was and the fact that they were getting called out on it. Most of that is likely the fuel filter though. I was quoted at $650 dollars without tax. All that is included is spark plug, and fuel filter change. It's possible you may have to drop the pan.īy the way, while talking with the dealership about the transmission flush, I had asked about the 100,000 miles tune up. Not sure about where the fuel filter is located though. I plan to get the spark plugs changed myself, and possibly the fuel filter. Doing the job yourself will save a good amount of money in labor charges. Just need to buy the MB parts, and fluids from the dealership. I'm sure it adds up to a good sum of money, but a lot of it can be DIY. New spark plugs, fuel filter, belts, differential, radiator coolant, etc. Don't forget that there is other important services to be performed around 100,000 miles. It actually seems to be doing it's job slightly better. I haven't noticed any problems with the transmission at all after the flush. I don't really drive the car all that much, except from work, and back. Only about 1,000 more miles since the oil change. ![]() I had also noticed my car was shifting slightly hard from reverse to drive, and that seemed to stop after the flush. I didn't really notice much change in my tranmission after the flush, but it did seem a little smoother. I can list them if you would like to know. They also replace several parts of the transmission. ![]() I've heard of people doing the job themselves, but the dealership uses a special machine to completely flush out, and clean up the old stuff. Flushing the transmission at the dealership is a really good idea, and not too expensive. I'm not sure if he actually talked to the technician who performed the job though, but I believe he probably did. I had asked if they evaluate the transmission during the fluid change, and the SA told me that the fluid looked dirty, but the transmission was in overall good condition. The car had 95,000 when the transmission was flushed. Recently I took my 02' C230KSC into the dealership for the transmission oil flush. That is what the dealership recommends, but I have heard from someone on this forum that wear on the transmission starts to get more excessive around 80,000 miles. ![]()
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