Allan, It's a mystery to me how a fluid could erode the metal impeller. I stay on top of coolant changes so I don't think it was that. I have the distinct impression that failure rates did drop significantly when I switched from Italian to German made water pumps. Ken Lewis http://neksiwel.20m.com/ <snip> 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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