What's the consensus? Do you change to new plugs after you fog for winter? I winterized my 496 HO per the Merc "soup" mixture and upon checking the plugs today, the porcelain is oil covered and very dark. Coming from carb'd engines where I used fogging oil into the intake, I always replaced with new plugs in the spring and kept a set of plugs to put in just for fogging.
Was thinking the FI mix would not turn the plugs as black as the carb method does. I'm going to throw in a new set and keep the spares for fogging.

I fog till it stalls and won't even kick.starts it up in the spring and runs fine all season.just saying

Go run the dog shxt out it for 10 minutes. They'll look the same before you fogged.

Mec is way off base with the 10 to 1 gas to oil mix. Volvo and even Indmar recommend 50 to 1.

IMO depending on area 40 to 1 to 60 to 1 works the best. I really soup mix at 40 to 1 or 50 to 1 nowadays.

You really have to do the soup mix no matter of the app even carb engines this way because of the fuel offerings even if it E - 0 in your fuel system as well.

Read post 18 and 19 in this link

http://www.offshoreonly.com/forums/d...k-63mph-2.html