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 |
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