Quote:
Originally Posted by s85e90
that price is crazy for what it is  |
The aftermarket coolers for a M-DCT will not be priced like an automatic transmission cooler or engine cooler. The M-DCT cooler needs to be able to handle much higher fluid pressures. From the technical manual:
"The normal operating pressure range is between 5 and 20 bar, although it can be increased up to 30 bar if necessary to maintain proper transmission operation."
also:
"The pressure required for the clutches is limited to 18 bar. The clutch is regulated by an integrated proportioning valve."
That puts the fluid pressure through the cooler much higher than the typical add-on style automatic transmission coolers were designed to handle. Also engine oil coolers are not designed around those operating pressures.
If the M-DCT cooler circuit is on the clutch flow path that is still 18 bar or about 261 psi. IF the cooler pops the transmission will be empty very fast.
Remember the cost of the fluid and the car won't move without fluid in the transmission so add the cost of a tow.
