Octane on demand (IMAGE) DOE/Pacific Northwest National Laboratory Caption PNNL's onboard separation technology enables octane on demand to improve performance and overall fuel economy for passenger vehicles and light trucks. Credit Illustration courtesy of PNNL Usage Restrictions Please use credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.