burning

my 1990 ranger burns white smoke from the rear of the engine after it has ran for awhile. it doesnt smoke or burn while it is running but as soon as i cut the engine off it smokes bad under the hood. its a thick white smoke. anyone have any idea what this could be? oil was low yesterday but i...

hey guys, I've already tried to search up as much as i could on this but I can't find the info I'm looking for so any help is appreciated. First off, the truck is a 93 Ranger X Cab 4.0 5spd 4WD.The truck has 92k on the odo but the title says its exempt so I'm not sure of the correct mileage...