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If a failing water pump with metal impeller grinds into the case house, you'll have metal in your water system - means water cooler and hoses.
Not in the engine oil system or inside any moving parts or bearings! It's just in the water channels or cooling lines or water coolers.
Same to plastic parts.
The question is: are fine metal parts better or not so fine plastic parts.
After some thinking i would prefer fine metal parts.
Regards, Markus
Last edited by Smallblock454; 03-16-2016 at 10:55 AM.
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