A FIVE cent cut in petrol prices was announced yesterday following a drop in import costs. Further reductions were expected. The pump prices for leaded and unleaded petrol will be cut to $8.10 and $7.76 per litre respectively, while diesel will fall by eight cents to $5.31 per litre. Caltex Oil and Esso price changes began at midnight and Mobil Oil will begin from midnight tonight. Shell will make an announcement today.