Advanced fuel and vehicle technology ExxonMobil works actively on the development of new engine technologies, which enable cars to drive more economically. The engine oils in the Mobil 1 Advanced Fuel Economy series are composed of high-performance synthetic base oils and additives that protect the engine against wear and improve fuel economy. The fuels in the Esso Synergy Supreme range contain additives with a cleansing action that enable the fuels to improve engine performance and fuel economy. ExxonMobil also manufactures products that help reduce fuel consumption, such as lightweight plastics. ExxonMobil continually works on the development of synthetic materials that help keep car tyres at the correct pressure longer and thus reduce fuel consumption.