gray smoke comes out of the tail pipe more so when the engine is reved & sometimes when i check the oil the tubing that holds the dip stick has smoke in it, & it slowly leaks oil have to add 1 to 1/2 quart 1x a month
gray smoke from exhaust pipe on 1997 Plymouth Breeze
You may also be burning oil. Need to have engine checked for source of burning oil, may be able to see this immediately when remove plugs and inspect the tip for signs of burned oil, then have compression test done to see if need a wet test to pinpoint whether it is valve guides/seals or rings, and then have inspected for source of oil leaks. May need to add dye and inspect for oil leak with blacklight.