Samenvatting
In this paper the author discusses the need to improve fuel quality in line with the technological development of engines. Aspects of gasoline discussed include: a) volatility; b) the use of alcohol in gasoline blending; c) the adsorption of sulphur and silicium; and d) the build-up of deposits. Aspects of diesel fuel discussed include: a) engine noise; b) smoke; c) deposits; d) foaming during refuelling; and e) emissions. Cooperative initiatives being undertaken are noted.