from what I understand, the metal tubes are for coolant only(low pressure) one is the feed and the other is the return. the metal round part is where the oil is cooled(high pressure). you could remove just the metal lines and put on the L shaped hose. since the oil and coolant never mix this is not a problem. I am guessing that the cooler could carrode faster with out the coolant there, but it would definatly last at least a oil change. If you want it off, and you just changed the oil, there is no reason that you can't dump the oil into a clean container and reuse it, I've had to do that before. I was able to make mine work by shaping it with a big hammer, I have no belt clearance issues or leaks. I hope that this helps you, let me know if you have any further questions.