Quote:
Originally Posted by MAXUM
I've always left the engine full of antifreeze, then again when I winterize mine I don't run the A/F through the stern drive, instead I drain all the raw water out of the block and risers then backfull everything including the stern drive from the coolant hoses on the block from inside the boat. Yes some stuff advertises corrosion protection. Whether or not that protection is significant or not is hard to say but I prefer knowing that there is antifreeze in there versus not. Opinions vary on this in reality it probably doesn't make a difference either way, just as long as there is no raw water anywhere in the system that could freeze and create a problem.
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So, is there a benefit to running A/F engine ----> stern drive as opposed to stern drive ----> engine other than not having to run with muffs?