The present invention relates to a Fuel Supplement comprising of selected plant oils mixed in given proportions, which when added to fuels like petrol and diesel can reduce harmful emissions during combustion of fuel. It can significantly decrease the Sulphur content in fuels and thus protect the environment from harmful pollutants. It improves the fuel lubricity and engine performance. It also increases the flash point of Diesel.

Mixed butenes from a cracking process, or raffmates of MTBE or tert-butyl alcohol (TBA), are simultaneously hydrated using water in the presence of a catalyst to produce sec-butyl alcohol (SBA) and tert-butyl alcohol as the principal products, the mixed butanols having utility as fuel additives, e.g., as oxygenates and octane enhancers to replace MTBE, and as a neat fuel.

Oil compositions derived from transgenic soybeans having a high concentration of oleic acid are described for use in various applications including use to enhance the low temperature pour characteristics of engine fluids. Such oil compositions are useful as lubricants, rail curve grease and engine penetrants.