Gull Force 10 is a brand of E10, 98 octane fuel marketed by Gull Petroleum in New Zealand, consisting of 10% bioethanol and 90% gasoline. The fuel was the first biofuel product to go on sale in the country, and was launched by Prime Minister Helen Clark on August 1, 2007.[1]
The bioethanol is produced by Fonterra from the fermentation of whey, a by-product of New Zealand's large dairy industry. Trials of the fuel have been taking place in New Zealand since 2004,[2] although other countries have been using similar fuels for many years.[3] Under the government's Biofuels Sales Obligation, announced on February 13, 2007, oil companies must sell 3.4% biofuels (by energy content) by 2012.[4] This requirement was rescinded by the National-led government.