Petrol and diesel supplier Caltex Australia has rewarded shareholders with a near-trebling of its final dividend for 2014 but will give priority to acquisitions over an additional capital return. The final dividend for 2014 was boosted to 50 per share, up from 17 a year earlier after the completion of a $270 million project to close the Kurnell refinery south of Sydney and convert it into a fuel import terminal.