On Wed, 19 Sep 2007 22:11:12 -0400, wrote:

On Wed, 19 Sep 2007 12:06:45 -0500, Vic Smith
wrote:

You can still change impellers on your preferred schedule.
But even a new impeller can break a vane, and the gauge
will indicate a problem.


The only impeller I have ever had fail in any way was brand new, about
an hour into service. That was on my Mariner 75 2 stroke. I put the
old one back in.

This is interesting. Other opinions/experience.
http://www.cafelocale.com/discus/mes...tml?1049260881

Hadn't thought about the thermostat and salt water. I change them on
my cars when I do hoses/antifreeze, but sometimes years go by first.
With a common 150hp OB costing 4 times what I pay for a car, I expect
preventative maintenance is going to be a major target when I get my
boat. I don't like rolling the dice

--Vic