Auto LPG specifications

Automotive liquefied petroleum gas (auto LPG) specifications include the following: propane (C3), butane (C4), ethane (C2), sulfur content and motor octane number (MON). However, this varies depending on the country. Auto LPG specifications for India and Thailand, for example, do not include fuel composition, while specifications for Japan and the Republic of Korea (South Korea) include propane and butane composition for several grades. The table below shows selected properties of auto LPG in Japan, South Korea, India, and Thailand. More details about auto LPG specifications are available on the SGS INSPIRE fuel specifications database.