We are using Caltex HDAX® 9200 Low Ash Gas Engine oil from the first day on INNIO Jenbacher JMS 620 natural gas engine and have experienced good performance, cost-effective operations and achieved 2000 hour drain interval without any lubricant related problem. Chevron’s state of art lab with the latest equipment, timely testing / reporting and technical support gives us more satisfaction and confidence. We are very satisfied the performance of HDAX 9200, it has shown excellent TBN and TAN results, protected liners and we haven’t observed ash deposition. In short HDAX 9200 have delivered excellent results. We have achieved 25,000-hour operation on HDAX 9200. We are achieving our target 2000 hours drain interval without any problem. Lube oil differential pressure and other parameters remain well within OEM limits till we change oil. Special thanks to the Chevron team for providing excellent technical support, timely used oil analysis reports, Videoscope Inspection of Engine Parts, and timely product supplies.