Well, I just came back from my mechanic's garage for a loss of coolant issue and we confirmed that my Valeo radiator has failed and contaminated my transmission with glycol. Now we need to do a flush but I'm wondering if I should do a full flush including the torque converter or a service flush would suffice? Below are the parts that I though I should purchase. Can anyone confirm if this is all I need? Do I really need to order a transmission dipstick tool? I would assume my mechanic has already one. Thanks!

1. Transmission filter – part # A 140 277 00 95 x1
2. Transmission gasket – part # A 140 271 00 80 x1
3. Seal ring for drain plug – part # A 140 271 00 60 x1
5. Lock pin for transmission cap – part # A 140-991-00-55x 1
6. Transmission dipstick tool – part # A 140 589 15 21x 1
4. 6 liters of MB approved Shell ATF 134 or 15 liters of fluid if I need to flush the torque converter as well

 

Do yourself a favor and bypass the ATF/radiator heat exchanger with a dedicated transmission cooler. Even if you fix it, it's still a flawed design.
https://imgur.com/a/W7iZf

 

 

Just replace the radiator along with the tranny fluid and call it a day. At the dealer, be sure you pick up a Behr and not a Valeo. These things are fairly cheap (say under $300) and can also be shipped in from the states. My understanding is that the newer Valeos are also fine, but just pick up a Behr to be safe.

As you want to get rid of as much coolant as possible, I would honestly recommend doing 2 full flushes a few days apart. Assuming each flush replaces 90% of the existing fluid, 2 complete flushes (including the torque converter) would get rid of 99% of the fluid. It'll set you back a few hundred bucks more, but it'll be much cheaper than scrapping the car.

Just curious, were there any weird transmission symptoms when this happened?

 

Take a read through this thread,
https://mbworld.org/forums/c-class-w...n-related.html

Pretty much tell you everything you need. 1 case of Shell ATF 134 will do the trick.
Here's a whole case for like 80 bucks.
And here's a kit with everything except the fluid for $69[/QUOTE]