Yes! The Oil Refiner is now being used on Industrial equipment costing as much as $300,000; this equipment is powered by diesel engines that operate 24 hours a day. Individuals and fleet owners worldwide use the Oil Refiner. The professional use the Oil Refiner primarily because they realize they can save thousands of dollars on needless oil changes and also protect their expensive engines against the damage done by dirty oil. Fleet owners now using the Oil Refiner model appreciate the ease of changing the element. They also save or eliminate down time on their vehicles and reduce expensive mechanical maintenance and repairs.

The dipstick tells the story. On gasoline engines, if the dipstick is black, the vehicle owner was not faithful in changing the element as often as necessary. On a diesel engine, the dipstick is usually black, but this does not necessarily indicate that the oil was dirty. A few oil-analysis tests done by a laboratory will establish the appropriate schedule for the element changes on a diesel engine.