I have a small oil leak that I am having a hard time tracking down. This is on a '92 prelude with the h23 engine. It is particularly bad because it drips directly on the exhaust pipe and burns off with an awful smell. It is coming from above the oil pan and appears to be from the oil cooler. I thought it was the oil filter itself but now it looks like it is beneath that. Is there a seal in or under there? Is there anything I can tighten up? Thanks for the help.