Also, I've heard that coating the impeller vanes with any kind of petroleum
based product, like Vaseline, ( to ease the installation) could cause the
neoprene vanes to swell or otherwise be damaged. Is this true? What about the
use of ordinary dishwashing liquid?

Teflon grease is the best choice for any rubber/neoprene parts in any
type of pump...'cuz it doesn't wash out very quickly and protects the
rubber from drying out when the boat sits. You can find it at most auto
parts and swimming pool supply stores

Peggie
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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://shop.sailboatowners.com/detai...=400&group=327

http://www.seaworthy.com/html/get_ri...oat_odors.html