- Joined
- Jun 25, 2001
- RO Number
- 5084
- Messages
- 59
Does anyone have clear instructions on how to winterize the new Mercruiser 4.5 250hp engine as well as if I can use alternative engine oil(s) and oil filter(s). Thank you
Yes definitely. Just asking if I was in a pinch.I can't say on the actual winterizing procedure but if its under warrantee, I'd for sure use the Merc 25/40 syn blend and filter, as well as the their High Performance gear lube. You're not saving much by using other stuff not approved by them.
This is a open system RWC. I'm in the Northeast. Saratoga NY. It gets cold.Is the engine FWC or RWC? Also, where are you located? Frozen Canada or fair weather S. Carolina?
Many people do as cwms suggested. Just be sure the thermostat is open when you are doing it. Some run on a garden hose for 15 minutes to warm the engine up then switch to the pink antifreeze.
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The last carborated boat I had…I was pouring AF into my strainer with the engine running, and as I was getting close to finishing, I had a buddy spray fog into the carb. Killed 2 birds with one stone.One of the reasons I like the idea of draining the block and refilling with antifreeze is I could prior to that focus on stalling the engine using 1 or two cans of fogging oil into the carb.
But newer engines are EFI and now its recommended to switch the fuel line into a container of gas, stabilizer and 2 cycle oil (I think thats it).
Each of my 2bbl 4.3 Mercs needed 2 cans simultaneously sprayed to kill the engine.The last carborated boat I had…I was pouring AF into my strainer with the engine running, and as I was getting close to finishing, I had a buddy spray fog into the carb. Killed 2 birds with one stone.
Some cans (brands) seem to spray more at once than others, But yes with a 2 bbl carb its best to use 2 cans at once.Each of my 2bbl 4.3 Mercs needed 2 cans simultaneously sprayed to kill the engine.