"Initial efforts by Proton seemed to confirm Mitsubishi's worst fears. When the Prime Minister took ten Sagas with him to China on a trade mission, the cars went equipped with air-conditioners, instead of heaters to combat the freezing Beijing winter. The cars themselves could not be used: their engines were equipped to use high-grade Malaysia petrol, instead of the much lower grade fuels used in China" - Industrialising Malaysia - The Proton Project


On the upside, this is the first time I've seen Malaysian fuel being called high-grade.