Patent ID: 8163042

Claim:
A hydrocarbon fuel composition comprising a synergistic mixture of: (A) at least 99% by weight of a base liquefied petroleum gas (LPG); and (B) additives including (a) 2 to 50 ppm organometallic compound, wherein said organometallic compound is selected from the group consisting of ferrocene, zirconocene, hafnocene, and ferrocene derivatives including acetyl ferrocene, proployl ferrocene, butyryl ferrocene, pentanoyl ferrocene, hexanoyl ferrocene, octanoyl ferrocene, benzoyl ferrocene, ethyl ferrocene, propyl ferrocene, n-butyl ferrocene, m-butyl ferrocene, pentyl ferrocene, hexyl ferrocene, cyclopentenyl ferrocene and combinations thereof; and (b) (i) 100 to 5000 ppm aniline or substituted aniline and (ii) 100 to 5000 ppm toluidine.