PETROL price wars are heating up in Mildura and Ouyen as independent operators consistently undercut the larger chains.

At Ouyen, there has been a three-month bowser brawl after Metro opened a service station on Gregory Street amid howls of protest from some sections of the community.

Metro and United were selling unleaded 91 for 102.9 cents per litre, which was eight cents cheaper than Caltex, ...