VAAL TRIANGLE - The Automobile Association said that motorists could be in for a slight reduction in the price of petrol. Unaudited fuel data from the Central Energy Fund, however, painted a mixed picture ahead of June. The AA's Layton Beard said there might be a slight reduction in the prices of petrol from around 6 to 8 cents a litre. Unfortunately, the price of diesel will increase by about 20 cents. Both of these increases and decreases are a result of international petroleum prices.