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- 23 CX-5 Premium
Third DIY oil/filter change on my 15k mile 2.0 ltr. First went like clockwork re-using original factory drain plug washer. I've done this for years on my wife's 2 successive Miatas and never had a leak. CX-5 washer is about half the thickness of the Miata's, so on the second oil change (10k miles) I used a new washer so as not to push my luck. New washer leaked. I do not have an 8mm allen socket, only an allen wrench, so I could not torque it, but I have a pretty accurate wrist and I know what 30 lb/ft feels like. Changed back to the original washer and that seemed to solve the problem. Left the cover off for a few days to be sure. That was six months ago and I have not noticed any spotting on the garage floor or seen any oil usage, so I was surprised to find when I removed the cover for today's service that the original gasket had been weeping too, just not as badly. So I replaced it again with a new washer, but I've got just about zero confidence in this thing to seal properly. As far as I could tell, there's nothing visibly wrong with the plug or the mating surfaces. I'm going to leave the cover off for a while this time and check it every few days (fortunately, that's easy to do on this thing), but I'm wondering if anyone else has had this problem and what they did to resolve it?
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