I seam to have an oil leak of about 2 qts. per 200 miles. It seams to be coming from the head gasket near the rear of the engine. Does this make sence? Also the rear tires are wearing towards the inside(2000 miles)from new to the cords showing on the first 2 in. of the inside. I checked the diff mount its OK the self leveling is working but the tires really angle out at the bottom. Any suggestions!