Abstract: Novel gasoline compositions comprising gasoline and dissolved or dispersed therein small quantities of from about 0.5 to about 100 parts by weight of a driveability-enhancing fluorine-containing polymer per million parts of gasoline will, after carburetion in a multicylinder automobile engine, plate out a fluoropolymeric deposit on the interior surfaces of the intake manifold of the engine thereby establishing on the manifold metal surface a coating of low wettability by any hydrocarbon gasoline component, either aliphatic or aromatic, and significantly improving the driveability performance of the engine. The driveability-enhancing fluorine-containing polymers useful in the gasoline compositions of the invention are characterized in that they must (1) have a critical surface tension of <17 dynes/centimeter at 25.degree. C, (2) have a high contact angle of at least 40.degree. to toluene at 22.degree.

Abstract: A cosulfurized product of a mixture of (a) a triglyceride having an iodine value greater than 80, preferably rapeseed oil, and (b) nonwax ester comprising the methyl ester of a fatty acid having from 18 to 22 carbon atoms or a mixture thereof, said fatty acid being predominantly monoethylenically unsaturated, has excellent extreme pressure and low temperature properties and is an effective substitute for sulfurized sperm oil.