Hello everyone, I hope all is well!
I never winterized an engine before. My engine is new and is a 5.7 Mercruiser. I think I have it figured out but I wanted to check with the pros here first! I think this is the correct order and procedure.
1) Top off the fuel and add fuel stabilizer. Then run engine for 10 minutes
2) Fog the engine until it stalls. Do I use the whole can or just spray it slow until it stalls? Also should I spray some in each cylinder and reinstall the spark plugs without starting the engine again? If so how much?
3) Since the engine is now fogged I don't want to start it. Can I remove all 5 blue petcocks to drain the water from the block and make sure it flows freely with no clogs. Then re-install the plugs, loosen the coolant tube on the thermostat housing and pour antifreeze into the tube until it comes out of the thermostat housing the color of the antifreeze. Then remove 1 petcock plug at a time to check for antifreeze uniform color. After that should I leave the plugs out and be done or should I put them back in and fill the engine using the coolant hose and leave full of antifreeze for the winter?
4) Drain and change stern drive fluid
5) Drain and change engine oil and oil filter
6) Change fuel/water filter
7) Spray a anti-corrosive lubricant over the engine.
Thank you for your time I really appreciate it
Corey
I never winterized an engine before. My engine is new and is a 5.7 Mercruiser. I think I have it figured out but I wanted to check with the pros here first! I think this is the correct order and procedure.
1) Top off the fuel and add fuel stabilizer. Then run engine for 10 minutes
2) Fog the engine until it stalls. Do I use the whole can or just spray it slow until it stalls? Also should I spray some in each cylinder and reinstall the spark plugs without starting the engine again? If so how much?
3) Since the engine is now fogged I don't want to start it. Can I remove all 5 blue petcocks to drain the water from the block and make sure it flows freely with no clogs. Then re-install the plugs, loosen the coolant tube on the thermostat housing and pour antifreeze into the tube until it comes out of the thermostat housing the color of the antifreeze. Then remove 1 petcock plug at a time to check for antifreeze uniform color. After that should I leave the plugs out and be done or should I put them back in and fill the engine using the coolant hose and leave full of antifreeze for the winter?
4) Drain and change stern drive fluid
5) Drain and change engine oil and oil filter
6) Change fuel/water filter
7) Spray a anti-corrosive lubricant over the engine.
Thank you for your time I really appreciate it
Corey