FOUR drivers appeared in Eastern Court charged with using untaxed government fuel. Yau Tim-fat, 43, was charged with driving a dump truck with 36 litres of marked oil in its tank on March 8 in Chai Wan. Lau Kwong-yiu, 32, Chan Fuk-cheong, 42, and Chan Wing, 44, were each charged with driving a mixer with 36 litres of marked oil in its tank, also at Chai Wan on March 8. All four defendants pleaded guilty. Magistrate Mr Michael Hill fined Yau $800 and imposed $500 fines on Lau and the two Chans.