Reliable lubrication for CNG engines Extended Drain Interval. Prevents Ash accumulation and deposit formation. In extended field trials the Rimula R2 CNG demonstrated longer drain intervals, excellent protection from iron wear and deposit formation and also prevention of ash accumulation. It provides the convenience of an oil that is suitable for mixed diesel and CNG fleets, covering the demanding needs of a CNG engine with a range of heavy and light duty applications and vehicle types. It has approvals for Mahindra SUV and Greaves engine fitted Three wheelers. Specification SAE 15W40 API CF.