Kenneth Lewis <kdlewis@NORTHSTATE.NET> writes:

>   I agree with your assumptions as they apply to FWD cars that
> require paltry amounts of coolant and only have to push it a short
> distance. But what about Vanagons which hold gallons and have round
> trips measured in yards? I would think that would greatly increase
> the load on the water pump. I have compared a new pump to an old
> one. The wear on the impeller blades is very evident . So an
> electric driven water pump might prove a healthy gain in FE (fuel
> economy).

A worn impeller is caused by corrosion and/or cavitation.  Neglecting
to change the coolant as specified is often a contributing factor, or
it could be poor quality materials in the manufacturing process.

Allan
--
1991 Vanagon GL