After I run it hard 75 for 30 miles and park it the next morning it smokes when I start it. If it doesnt sit all nite and I start it no smoke. If I run it 55 mph and kill it till morning it doesnt smoke
Usually when the car sits and it only smokes upon first start then it clears up. That is usually caused by the valve stem seals allowing oil to run down the valve stem seals and get into the combustion chambers. Then the smoke clears when the oil is all burned up.