Purchasing a boat from a cold weather climate that has been "fogged" for the winter. Whats involved in
de-fogging? Just change oil and run it? Squirt oil into cylinders first?

Here in So Cal we prep for the winter by getting out the heavy sweatshirt!

Fire it up.

After the first couple of hours, you may want to change the plugs if they're loading up. Keep them if you do and put them back in at the end of the season when you re-fog it.

Thanks for the info.

Won't be re-fogging, just pulling out the warmer clothing for our oh, so frigid 65 degree winters!

be sure and close all the drain plugs in the block and manifolds they usualy leave them open when they winterize the boat.