I have DEKA stage 2 clutch in my DCT and using redline DCT oil.
Couple of months back i removed the gearbox heat exchanger and installed a 25 row oil cooler, using EOS adaptor and -8 lines and fittings.
Gearbox temps dropped from a regular 90-95c to 75-78c. The country that i live in has a brutal summer (avg 50c) temps, i can't make any pull to see if anything got affected by this conversion, i shall come to know in winter but gearbox and clutch behavior didn't change at all.
And yeah, i'm on XHP stage 3 v1.3