Winterizing my 2018 Chaparral with Mercruiser Alpha 1 stern drive with a 4.5L fuel injected engine.
THE MAJOR UPDATE IS PREFILLING THE ENGINE BLOCK WITH ANTIFREEZE TO RESOLVE THE ISSUE WITH THE BLOCK NOT FILLING COMPLETELY USING THE FEED FROM THE CAMCO BOTTLE AND EARMUFFS.
This winterizing process is quite different than in the older engines. The fuel injected and especially catalyst equipped engines cannot be fogged through the intake system like an older carbureted engine. There is a special fuel mix to be made with a high concentration of 2-stroke oil plus fuel stabilizer that then must be fed to the engine through its fuel feed hose. In the video, I will show details of that process, including the special fuel feed rig that I assembled. I did this with a small 1 gallon gas can, hose and fittings with an outboard primer bulb. This works for me, but it does have a risk of spillage since it isn't sealed and requires extra care to not tip it over. It would be safer to purchase a small outboard motor fuel tank and hose assembly to adapt to the engine. Those are usually at least 3 gallon capacity and I was trying to avoid having a large tank only partially full, because it would take a long time for me to use 3 gallons of this mix.
This video shows the details of a separate portable tank and the fittings:
• Fuel Connections for M...
CAUTION: POTENTIAL FOR FUEL SPILLAGE
Before removing the fuel line from the tank to engine: 1. Check your system to be sure that you don't have a fuel pump mounted in the tank. I think this is rare, but worth a check. My 4.5L engine has a fuel pump on the engine that draws from the tank. Your tank will usually have an electric sending unit for the gauge, so there will usually be some wires coming from the tank. 2. Be sure that your fuel tank withdrawal fitting or hose connection is above the fuel level in the tank. If you have a full tank of fuel and raise the bow of the boat, fuel could run from the withdrawal port or open hose when you loosen and remove the fitting. 3. Consider capping the withdrawal fitting on the tank or open hose to prevent fuel or vapor leakage while the fuel line is disconnected.
Then the process includes an engine oil change and stern drive oil change, draining the water from the block, and filling the block with antifreeze using a hose and funnel followed by a Camco kit to feed antifreeze to a running engine. I will also provide more detail of the antifreeze mix that I use and how I use the Camco kit to finish the job.
I have a followup video regarding antifreeze capacity of the block and fill issues:
• Problem & Fix Winteriz...
This video show how to use an inexpensive refractometer to check your antifreeze mixture:
• Use a Refractometer to...
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Supplies that I use for my engine. Note that part numbers can change and should be verified as the latest. Also Mercury often uses different part numbers for Mercury branded vs Quicksilver branded:
92-858064Q01 Quicksilver High Performance Gear Lube (2 qts needed, uses about 1.5)
92-8M0078623 Synthetic Blend Gallon Quicksilver (25W-40) Engine Oil (1 gallon)
92-8M0078622 Synthetic Blend Quart Quicksilver (25W-40) Engine Oil (1 qt) (5 quarts total required, I usually buy 1 gallon jug plus one quart)
35-866340Q03 Oil Filter - Mercury - Mercruiser
57099 Oil Filter - Wix equivalent to Mercury per Catalog
92-858026Q01 Quicksilver Premium Plus 2-Cycle Outboard Oil Syn Blend (use for special gas mix)
31400 Starbrite -50F Antifreeze
31500 Starbrite -100F Antifreeze (full strength or dilute to desired concentration)
31600 Starbrite -200F Antifreeze (dilute to desired concentration)
Also use other brands of non-toxic antifreeze as long as they have corrosion inhibitors for engines.
Sta-Bil 360 Marine Grade Fuel Stabilizer
The 5 gallon antifreeze bottle with the red handle valve is a Camco kit. #65501
www.camco.net/...
They are available through a number of retailers. You can find it here at Wholesale Marine. I buy many of my supplies through them:
www.wholesalem...
DISCLAIMER: In my videos, I provide suggestions, demonstrations, and opinions on techniques, methods, and materials for various projects. While I do my best to be sure these are accurate, there are no guarantees, expressed or implied, that my information will work for you. If you wish to use them, you must check and verify that they are appropriate for your use - use them at your own risk. Do-it-yourself projects are variable and there are risks in conducting them. Be sure to follow all safety practices, including proper care handling gasoline.
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