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2011-2014 Mustangs
2011-2014 Mustang Talk
MMR identifies a new problem with E-85/racefuel softening the secondary chain guides
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<blockquote data-quote="Beernuts" data-source="post: 14812882" data-attributes="member: 134843"><p>Oak Ridge National Laboratory found similar results in their testing of Ethanol blended fuels:</p><p></p><p>"Nylon 12 showed a slight increase in hardness after dry-out despite the significant volume and mass loss. This embrittlement, albeit slight, coupled with a decrease in volume and mass strongly suggests extraction of an additive, especially a plasticizer. PPS and PET also exhibited a slight increase in hardness along with a small increase in dried volume."</p><p></p><p>What's more interesting, the lower ethanol percentage fuel (25%) actually caused MORE softening than 85% in some materials.</p><p></p><p>Are the OEM parts stamped with a material code? Could shed some light on what's happening. </p><p></p><p>Here's a link to the study (good reading): <a href="http://info.ornl.gov/sites/publications/files/pub35074.pdf" target="_blank">COMPATIBILITY STUDY FOR PLASTIC, ELASTOMERIC, AND METALLIC FUELING INFRASTRUCTURE MATERIALS EXPOSED TO AGGRESSIVE FORMULATIONS OF ETHANOL-BLENDED GASOLINE </a></p></blockquote><p></p>
[QUOTE="Beernuts, post: 14812882, member: 134843"] Oak Ridge National Laboratory found similar results in their testing of Ethanol blended fuels: "Nylon 12 showed a slight increase in hardness after dry-out despite the significant volume and mass loss. This embrittlement, albeit slight, coupled with a decrease in volume and mass strongly suggests extraction of an additive, especially a plasticizer. PPS and PET also exhibited a slight increase in hardness along with a small increase in dried volume." What's more interesting, the lower ethanol percentage fuel (25%) actually caused MORE softening than 85% in some materials. Are the OEM parts stamped with a material code? Could shed some light on what's happening. Here's a link to the study (good reading): [URL="http://info.ornl.gov/sites/publications/files/pub35074.pdf"]COMPATIBILITY STUDY FOR PLASTIC, ELASTOMERIC, AND METALLIC FUELING INFRASTRUCTURE MATERIALS EXPOSED TO AGGRESSIVE FORMULATIONS OF ETHANOL-BLENDED GASOLINE [/URL] [/QUOTE]
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2011-2014 Mustang Talk
MMR identifies a new problem with E-85/racefuel softening the secondary chain guides
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