Optima D6 S (SHPD) is a Super High Performance Diesel (SHPD) synthetic heavy-duty diesel engine oil delivering
outstanding performance and durability by using the latest unique scientific technology. Developed to provide the
ultimate protection for the latest low-emission heavy duty engines fitted with diesel particulate filter traps and other
exhaust after-treatment devices, as well as providing the ultimate performance and protection for older engines from
Europe, USA and Japan