i was wanting to plumb my turbo oil return to a cooler and then instead of having the return going to the sump, i was thinking of putting it in to the head as on extra lube for the rockers etc, was wondering if this would cause a problem for the turbo as the oil would have to push it self up hill to the head rather than just draining into the sump!!!!

also what is the best jic sized hose to use for the oil return

any help will be great as im not the good at the old turbo side of things