Environmentalists want an evaluation of all oil disposal, including marine oil, one litre of which has the potential to pollute one million litres of water if dumped in the sea. Provisional legislative councillor Ip Kwok-him, backing the call, said yesterday he would raise the issue with provisional Legco colleagues. Road vehicles produce more than 10 million litres of used oil each year (three million litres from private cars) and a further two million litres of coolant, according to a 1996 study by Better Environment Hong Kong. Despite two recycling programmes - a private one which charges between $200 and $400 per 200-litre barrel, and a government one which charges about $10 per barrel - more than one million litres of used oil still 'disappears'. Yesterday, the environment group launched a new oil disposal programme with 12 new collection centres. For six months the service will be free of charge, after which it will charge $1 per litre. The 12 locations are: MotorMech - Aik Sun Factory Building, 14 Westland Road, Quarry Bay; Hi Tech Industrial Centre, 491-501 Castle Peak Road, Tsuen Wan; AutoFit Ltd - 3 Guardforce Centre, G/F, Hokyuen Street East, Hunghom, Kowloon; 15-16 Block D, L/G Floor, Wah Lok Industrial Building, Phase II and 31-41 Shan Mei Street, Fotan, Sha Tin; Car Beautician - 7, G/F Sino Industrial Plaza, 9 Kai Cheung Road, Kowloon Bay; 176-178 Junction Road, Lok Fu; Shop B G/F, 7 Fortress Hill Road, North Point; Shop C&D, G/F, Derrick Industrial Building, 49-51 Wong Chuk Hang Road, Aberdeen; Unit 2, G/F, Mansfield Industrial Centre, Hong Yip Street, Yuen Long; Cyclon - G/F No 6, Kin Fat Industrial Centre, Kin Fat Street, Tuen Mun and G/F, 127-135 Yeung Uk Road, Tsuen Wan; Fanling Lubrication - G/F, 17 Yip Chong Street, On Lok Tsuen, Fanling.