Re: gear oil test.
Thats a new one...the Egg Beater test.

<br /><br />My brother tried one of those Amway type things, so I was obligated to go to one of those recruiting seminars those people always have going on. They tried to convince me that styrofoam has a similar molecular structure to bacon grease. They poured some drain cleaners into styrofoam cups and amazingly

their product ate right through it. I just snickered to myself because I know what gasoline does to styrofoam cups.

<br /><br />It seems to me that the water separation thing is sorta counterproductive in a marine gearcase. You're going to get some water in there sooner or later. I'd rather it mix in with the lube rather than settle to the bottom and rust the bottom of the parts.