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Originally Posted by Kebowers
Part of the certification REQUIRED for any new diesel fuel sold (changed manufacturing process) is a test for wear/scuffing of injector fuel pumps. Additives are added to the fuel as required at the refinery to meet this important characteristic.
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There is no lubricity spec in North America. They are talking about adding one to the ASTM spec (D976?). The FIE (Fuel Injection Equipment) manufacturers association suggests using fuel with a maximum HFRR wear scar of 520um, (Bosch prefers 460um) but tests have shown that at least 50% of the diesel in the US does not meet that spec. It is expected that once ULSD hits the market in June 2006, that percentage will rise.