go buy the oil pump
You will find out really quick that that drain hose does not work; it dribbles at best and will be doing so for several hours before you get the system drained. That is why none of the marinas use it.
I tried it on by Baja this spring just for the heck of it and soon realized why I was told by the marina years ago not to bother.
The money you save on one oil change will cover the cost of the oil pump used by most marinas. Cost me about $100 back in 04 or 05 might be more now. Runs off your battery and has a switch that allows you to remove the oil from your engine then reverse the switch and pump it out of the bucket and into your own waste barrel.
Another thing to consider, many of the marine manufacturers have changed to much smaller oil filters. If you have room for it consider installing the larges filter you can find.
The bigger the filtration surface the better your oil flow. Mercury changed the filter on my 496 to about half its original size. I now run the filter used on a 500HP instead.
Good luck with your oil change. I’d be curious to know just how long it takes to drain the system using the tube.
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