TOTAL RUBIA GAS 9M 15W-40 is a specially developed engine oil for the latest generation natural gas (CNG, LNG) heavy-duty engines in transport sector (especially buses, deliveries and waste collecting vehicles) also compatible with diesel and gasoline applications based on the latest API CK-4 / SN specifications. With its optimum ash content, TOTAL RUBIA GAS 9M 15W-40 protects Cummins’s engines.