winterize merc 3.0

dondi

Seaman
Joined
Apr 14, 2011
Messages
61
1985 thundercraft 140 hp merc io
can i just drain the three drains without connecting muffs and antifreeze .spray light coat of oil and cover it for the winter?or must i run antifreeze thru it?
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: winterize merc 3.0

No need for anti-freeze, but you will need to run the engine to get the fogging oil into the cylinders, and get the engine oil warm enough to do a proper oil and filter change. You should also run stabiliser in the fuel, change the fuel filter (check it for water) drain the carby and fuel pump, pull the drive off and check inside the bellows, drain the drive oil (checking for water), inspect (change if necessary) the water pump impeller, re-assemble and refill with oil. Have I missed anything? Oh, yes, pull the drain plug out of the manifold and elbow too....

I am SO glad I live in a warm climate and don't have to do this bs every year... Winterising for me is to change the summer sheets to winter sheets and put an extra blanket on the bed. :D :D :D If it gets REALLY cold (like below 50 degrees) I'll put a woolie jumper on..... :D
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: winterize merc 3.0

can i just drain the three drains without connecting muffs and antifreeze

Putting antifreeze in the cooling system is NOT necessary. All antifreeze is is a pacifier that lets DIYers sleep at night because they don't understand their cooling system and freezing water.
 
Top