Agreed. I won't fly hard IFR with a dry pump, and I laugh each time I
throw one of those Parker Hannafin "mandatory" notices in the trash,
unopened. The last wet pump I had overhauled had over 3000 hours on it,
and the overhaul facility changed the bearings, just so they could say
they had done something.


Javier Henderson wrote:
(JFLEISC) writes:


The typical "output" of these pumps
is a lot of air with a fair amount of oil entrained, almost like the
spray from an aerosol can.

I've tried 4 or 5 different units, and only the Airwolf did what it
was advertised to do.


I was afraid of that. Cheaper to go with a dry pump, I think.


I think it's more of a lottery. Wet pumps, from what I read, will
outlast your engine, whereas dry pumps can last anywhere from .1 to
many hundreds of hours. But let's say they last 500 hours on the
average, that's four pumps over a 2000 hour TBO engine, reducing the
financial advantage of the dry vs. wet pumps.

-jav