Removed my oil cooler as a result of an accident and since I have an extra oil cooler, I took it to a radiator shop to have a drain brazed in. Owner of shop seems concerned that oil cooler is "high pressure" - how high is pressure here anyway? I have been loosening my lower oil cooler hose and draining this way -even after the sump is just dripping I still get a quart or more of oil. I don't over tighten lower hose mount but since those threads are soft, I would rather just pull a drain plug as this is quicker and less taxing on the soft aluminum threads. Anyone know what pressure is in psi at the oil cooler? Can't be much I am guessing -