Despite the continual slump of global oil prices, petrol prices at the bowser are increasing.

This week the oil price hit its lowest levels in six years to around $US43 a barrel.

The average cost of unleaded petrol in Perth will increase by around 9 cents a litre to $1.35 on Thursday — in late January the price hit 99c/L.

Most BP and Coles Express sites are increasing its prices by 13cpl to $1.39/L, while the majority of Caltex, Caltex Woolworths and Puma Energy sites to $1.38/L.

Wednesday’s cheapest fuel, $1.21/L, wais selling at Puma Energy Bellevue in Perth’s eastern suburbs, Puma Energy Kewdale, Gull Welshpool, Caltex Woolworths Southern River and Caltex Woolworths Warnbro Fair in the south.

In the northern suburbs Caltex Woolworths Joondalup Winton Rd and Puma Energy Wanneroo are also selling at $1.21/L.

Meanwhile the cheapest diesel prices, $1.24/L, can be found at United Ellenbrook, Armadale and Neerabup; Puma Energy Neerabup and BP Koondoola.

Puma Energy Gingers in Upper Swan is selling diesel at $1.23/L.

FuelWatch said there are still 30 sites selling below $1.24/L on Thursday, which you can view on its website.

The difference between the highest and lowest priced sites is 18cpl, which means you can save up to $10 on a 60 litre tank of fuel.

Perth’s weekly petrol prices are, on average, cheapest on Wednesdays and at their most expensive on Thursdays.

Extracted in full from Perth Now