Police are trying to trace two men after diesel was stolen from Tesco Petrol Station on Pengam Road in Ystrad Mynach.
It happened on the morning of Tuesday June 3.
The men, driving a silver Rover, filled up diesel cans in the boot of the car and made off without paying.
If you can help call us on 101 quoting log number 126 03/06/14 or call Crimestoppers on 0800 555 111.