In 2003, Caltex Australia entered into a joint venture agreement with large supermarket retailer Woolworths Limited. Shortly after in 2004, a similar fuel discount offer was launched by rival Coles Group. Woolworths' existing "Plus Petrol" service stations received Caltex branding and, similarly, Caltex service stations received Woolworths branding—the joint venture outlets became Caltex Woolworths. However, this was the case only with certain Caltex service stations close to Woolworths Supermarkets and many remain unassociated with the fuel discount offer until November 2018, when 125 Caltex-operated sites also began to accept the fuel discount offer.