The cost of fuel rose again on Wednesday: all major oil companies lifted petrol and diesel prices by at least 3c a litre.
Caltex, BP, Mobil and Shell have all confirmed the rise.
Unleaded 91 octane is now 175.9c, up from 172.9c, and diesel is 117.9c.
The companies attribute the increase to a rise in the cost of the product overseas.
Gull says however that it is not increasing its prices.