As I knew from reading the old papers that came with our coach our oil ban drain bolt hole has a helicoil in it.<br/><br/>The edge of the hole is enlarged enough to cause a small drip around the copper crush ring. <br/><br/>If I were home I would have the shop remove the pan and hand it to me and my tap removal place could install a timesert into the aluminum pan.<br/><br/>Logistics in the future...