Pensol Industries Limited is the manufacturer of Heavy Duty Engine Oil with Longer Drain Intervals. This falls in the category of automotive oils. Pensol Industries Limited is an ISO 9001:2000 certified company. The model name of Heavy Duty Engine Oil with Longer Drain Intervals is Diamond Super 20W40. The Heavy Duty Engine Oil is used for petrol and diesel engines. This is blended from selected, highly refined, HVI stocks with a quality conscious additive package. It has high detergency level, thermal and oxidation stability. It reduces fuel consumption and makes the engine last longer and clean. The Heavy Duty Engine Oil with Longer Drain Intervals provides ease in starting and ideal for use in petrol engines also.