If the car has never had an oil filter housing gasket change, it's certainly due. Be careful on the mounting bolts....break one of those puppies off and you are in a world of hurt because of clearance issues. While you're at it, along with the figure-8 shaped gasket, I'd replace the pressure relief valve, spring, and washer too (nos. 10,11,12,13,14):
http://www.hondaautomotiveparts.com/...UBE-OIL+FILTER
If you can't get to the housing for awhile, try taking off the oil filter and feeling where the oil filter's o-ring contacts the housing...mine had built up a layer of crud that was keeping the filter from seating well and was leaking (but it was also leaking from the housing gasket more). With the filter off, you can feel what should be a smooth surface for the filter o-ring to contact. If there's a built-up ridge there scrape it off with your fingernail and then use a rag with some solvent to finish it off. Might help some.
My latest oil leak challenge seems to be where the oil drains from the head/valve gear back down to the crankcase through the head gasket. I'm going to try to clean it all off and use some red silicone to see if it will seal it, but I'm not optimistic. Oil leaks on our cars are crosses to bear for sure, mainly because they're so irritating, what with the oil either dripping on the exhaust or the fumes getting sucked into the ventilation.
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