Blowing smoke, but runs good

Good morning,

What color is the smoke?

Blue indicates burning oil.

https://www.2carpros.com/articles/blue-smoke-from-engines-exhaust

White indicates burning coolant.

https://www.2carpros.com/articles/white-smoke-or-steam-coming-from-the-exhaust-pipe

Black is the fuel from running too rich.

https://www.2carpros.com/articles/engine-black-smoke

Roy