Kenne Bell and Kirban sells oil filter adapter O-rings. Also, did you clean the mating surface between the oil filter and adapter before installing your new oil filter? I have seen some shops take the old oil filter and use the oil from that filter to lube the gasket. I never did that as a technician working on customers cars, and I definitely won't do that on my cars. When our Lexus was still under warranty, there was either a defective oil filter installed or a dirty mating surface, because there was a leak by the gasket. I asked them politely to change it and they refused, until it leaked again and they gave us a loner car and towed it in. Needless to say, that Lexus dealer no longer does oil changes for us. What a waste of time for me and the dealership after refusing a simple request.
