What is GREY smoke from exhaust?
What is GREY smoke from exhaust? Blue/gray exhaust smoke means there's likely an oil leak and your engine is burning oil. Time to have a qualified technician check things out. The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls. What kind of smoke comes out of a diesel engine? If blue smoke is still coming out after you’ve used this though, then that indicates a more serious engine issue that you should get checked at a garage. Of all the different colours of smoke that can come out of a...