Coop You were absolutely right regarding my 92' Miata's head gasket vs CAS o-ring oil leak. Checked under CAS unit and sure enough, LOTS of oil. Followed the directions from Miata.net and changed the o-ring myself. You saved me a very expensive (and unnecessary) "repair" from a shop I thought I could trust. If my Miata ever needs work I can't do, I hope I can schedule an appointment at your shop. Thanks for being there for us Miata enthusiasts. Allen
