Winterizing a 5.8 OMC

C

carver 2557

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So a fiend of mine wants me to help him winterize his 5.8 OMC engine and his OMC Outdrive...Not to keen on the idea, but he says he has no cash for the marina to do it. I have done my own for several years, but it's not an OMC...Anyone have one of these outfits and can give some advice?..I did find the 4 drains on the engine and Manifolds...What's next?...
 
You need to find an owners / service manual to be sure you located all of the block drains. Been a few years since I did this, and there are a couple of guys on here who are very OMC savvy who will add to my suggestions.
1. Drain the block , I had one drain that was difficult to find, it was hidden behind the fuel pump I think.
2. Drain the exhaist manifolds (drain plugs), and I also used to remove the water hoses from the thermostat housing and pour anti freeze into the exhaust manifolds.
3. Remove the lower water pump hose and drain it. I never put antifreeze in the water pump, but you could thru an upper water pump hose.
3.5 Pour antifreeze into the thermostat housing, good time to replace the thermostat.
4. The power steering cooler has a drain plug, but I never found any water in it, so I quit messing with this hard to reach part, I suspect it was self draining since it was up high.
I may have missed something so one of the other OMC guys will fill in.
 
The easy way....first, take out the thermostat. Put ear muffs on the outdrive with a very short hose, maybe 2 ft. Put a funnel in the end of the hose, start the engine and pour 3-4 gallons of anti-freeze into the funnel while the engine is running. Engine is now winterized.
 
I do the drain and manual fill with AF method, I think it's safer. The one point not mentioned is that there are 3 plugs on the pivot housing on the transom mount that need to be drained...2 on the starboard side (have to tilt it up to see both, top is a vent bottom is drain)and there is another drain on the port side....
 
LouC,
Why is it safer to manually fill with AF? People use earmuffs everyday to flush an engine. Why not just flush it with AF? It's quick and simple
 
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