This is how I winterize my Chrysler engines on the hard.
I have been doing it this way for 12 years and no problem
I- DO NOT- remove drain plugs.
Gather your supplies and equipment as follows:
From Go2marine order one of these--
Qty. 1
Price 23.45
Moeller, Inboard Adjustable Motor Flusher
Mfr. Moeller
Part No. 242007 | Mfr No. 099081-00
Obtain a 5 gallon plastic bucket. Loews or Home Depot $5.00
I used 1- 1/4" clear vacuum cleaner hose that I had laying around the garage.
Long enough to reach the water pick under the boat to the exhaust line at the rear.
Note:
I used vacuum cleaner hose because it has spring wire molded into the hose and
it keeps it from collapsing under the vacuum from the engine pump and the heat
produced by running the engine.
And it was free to me.
Obtain the necessary fittings to attach the hose to the motor flusher and the bottom
of the bucket. Again Loews, Home Depot or your local Hardware store.
3 gallons -100 degree R/V antifreeze. $9.00 Blue in color not pink stuff
Simple attach the 5 gallon bucket under the exhaust pipe and the motor flusher under the water pick up.
Attach a 3" PVC elbow to the exhaust port.
Make sure you have a good seal between the Adjustable Motor Flusher and the hull.
Dump 3 gallons of -100 degree R/V antifreeze ( not the pink stuff) into the bucket.
Start the engine and let it idle. Have your helper momentary deflect the exhaust water to the ground by swinging the PVC out of the bucket. When you see a hint of blue devert the PVC back into the bucket.
Checking the bucket for circulation. A second set of eyes helps!
Let the engine get to normal operating temp. Mine is 140 degrees. This allows the thermostat to open
and thoroughly mix the 100 proof antifreeze with any remaining water in the engine block.
I let my engine get to 160 degrees before I fog the engine and shut it off.
Remember to recycle the left over antifreeze solution in the bucket. I use a funnel and pour the
antifreeze into the empty gallon jugs. Then take it to your local recycle center for disposal.