I just bought a "Topsider MVP Oil Changer" from West Marine and it works
quite well. Just pump up some vacuum and let it suck out your engine oil
while you do something more interesting. Seems to be well made and not
likely to get broken as its all metal construction. Got it on sale for $40
Cdn which is 30% less than the website price of $40USD.
By the way, make sure your engine is fully warmed up before you use any of
these devices.

"Silverton 31'" wrote in message
m...
I was contemplating the idea of purchasing one of those, pump the oil
out by your self components. One boater told him he really liked his,
i was wondering of anyone else here has tried it? I find it might be a
good investment so you can change your oil throughout the season to
run at optimal performace. Thanks for posts..