Most major automakers agree: that the old adage that you should change your car's/truck's oil every 3,000 miles is outdated, and even 5,000 miles may be too often. Sadly some are wasting money and harming the environment by changing oil too soon. Due to higher oil quality standards from many manufactures now recommended oil change interval from 5,000 miles to 7,500; but engine oil does not wear out in even 15,000 miles if it is just dirty.
What you need is to filter out the dirt to keep the engine oil light and flowing, thus reducing wear and tear on engine parts. Dieselcraft Division of Magnum Group LLC of Auburn California has developed the OC-25 Cyclone Series Centrifuge, which cleans engine oil by generating a centrifugal force which is 2,000 times greater than gravity. Engine oil pressure spins the centrifuge rotor at a rate up to 6,000 rpm's. That force separates the solid contaminates from the main oil supply. The solids are stuck to the inside of the rotor cover, which is easily cleaned with a paper towel...no filter to dispose of.
The disposal of used motor oil poses the greatest environmental risk, and the less often you change it in your car, the less pollution you cause from its disposal. (photo driving school)
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