Ron Thornton wrote:
I bet you'de be hard pressed to find anything but trace elements of
teflon on an impeller after it has pumped water for an hour or so.


Silicone grease isn't worth a flip, but Teflon grease lasts quite a
while in marine toilets--at least a season, sometimes two--and swimming
pool pumps...so it should last in an impeller housing for a little
longer than an hour anyway. A new shot of it once a month or so
certainly wouldn't hurt.

Lubricate if it makes you feel better but it really only makes assembly
a little easier. Beware what you use though, cause a lub with the wrong
solvents in it can damage it.

Especially any petroleum based lubricant...for instance, vaseline or
WD-40.

Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/html/get_ri...oat_odors.html