I normally add a auxilary transmission cooler to every vehicle I own. I have already heard thet these 722.6 units burn up, from the tech at a local Mercedes service shop.
I mentioned wanting to add a secondary cooler to him, and was told that there is absolutely nowhere to put it. I have not gone under the car yet to look for a spot myself to confirm that. He also told me to add a bottle of Lucas to the transmission, which I already do on my vehicles.
The transmission was just redone before I bought the car, I want it to last.
The service tech's at the dealership did not care for my comment about their burning up issue though when I mentioned , Lifetime fluid and no dipstick to check it. Put two and two together wonder why your doing so many transmission jobs????
My Mercedes is a E300TD incase your wondering,
Please post.
Those cars come with transmission cooler from the factory. It is using smaller coil inside radiator for that. With converter locks no need to add second cooler unless you are using the car for towing 4000 lb travel trailer.
Haven't hear about those transmissions burning at all. They fail occasionally, but you won't find lot of notes about it on the forum. Actually recall one member recalling transmission failure after the service.
DO NOT ADD ANYTHING TO THE FLUID
I would keep the Lucas out of a 722.6 transmission. They call for special fluid.
The lifetime fluid recommendation is the problem, not the fluid temperature.
If you're really pushing the transmission, a additional fluid cooler would help. But let's not forget that you have a diesel, and the same transmission sits behind the 430.
cleanliness is next to godliness not cooleyness.
change the fluid and filter with mb spec fluid,keep additives out of it,and with the factory cooler in a diesel that is hard pressed to do 0-60 in 9 seconds heat is hardly ever going to become an issue.
if you tow tru cool 14500 gvw 5inch by 11 in trans cooler.If a shop can't fit that in they can't be called a shop
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