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Old 10-20-2010, 09:49 PM   #322 (permalink)
autoteach
Master EcoModder
 
Join Date: Apr 2010
Location: belgium, wi
Posts: 262

Bus - '94 Ford School Bus huge

Stupid - '01 Chevy Blazer LS
90 day: 21.38 mpg (US)

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Quote:
Originally Posted by mwebb View Post
..."the fuel doesnt usually mess the pump up, it usually gets to the contacts on the fuel sending unit. this does not necessitate a change of the pump."...

no , it is BOTH the fuel pump and the sending units that are destroyed .

BMW and Mercedes Benz will not warranty a fuel pump IF the fuel in the tank has contaminants like water or fuel with more E than E10 .
those fuel pumps have a very hefty price tag
the warranty claim must be submitted with fuel test results or it is denied .

many OEMs demand or at least strongly recommend top tier fuel because of the contamination problem

I have 30:1 failure of sending units, whose contacts are directly in the fuel, to the fuel pumps. This is far more common, and maybe that is the way my post should have read.