Storage Stability of Federal Specification Gasolines.
SOUTHWEST RESEARCH INST SAN ANTONIO TEX ARMY FUELS AND LUBRICANTS RESEARCH LAB
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Eight drum samples of gasoline from various petroleum companies and four drums of European gasolines were stored for six months in sealed drums under cover. Two of the gasolines were unleaded and six were low lead fuels. Analyses, bench and engine tests performed on these samples, prior to and after the storage period, indicated that gasolines meeting these federal specification requirements appear to have adequate storage stability for at least six months and probably for longer periods. Gasolines with high olefin content appear to have less storage stability than those with lower olefin content. The work indicates that, from the standpoint of storage stability, combat gasoline in the military system could be replaced with federal specification gasoline with no ill effects however, a more severe oxidation stability requirement should be included in the Federal Specifications to insure adequate storage stability. Modified author abstract