i just did this rdt to my truck to day and i experimented with it before i had a new peice of hose, and the first time i just disconected the hose that came with the banks
kit at the cdr valve and put a crank case vent filter on it i drove it around for less then 30 mins and their was oil everyware! so i hooked it back up, so today i put a new peice of tube on the banks cast peice whare the ij pump cover is and ran it over the ac pump then over the coolent over flow down the wheel wel and pointed towards the ground i also pluged the cdr valve, but when its idling lots of vapors come out with hardly any oil and the truck seems to run better as well and i havent notecd any major oil loss, although whare i have the hose going over the ac pump oil seems to collect their but nothing major, so maby leaving the cdr open has an affect? hope this helps