I just changed the oil in my cobra 5.0L using the book as a guide. I filled from the middle hole with the fill plug out on the top. The capacity in my book is 64oz (2 qts). As I got through about 38oz oil started running back out of the fill hole. I used the nose of the bottle and kept pumping it in there until all 64oz were inside. I installed all the plugs and ran it in fwd then rev for approx 1 min each direction. Now I remove the dip stick and there is no oil on it. What is going on? should I fill it some more or is it going somewhere. There isnt any on the pavement. Thanks Kep.