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Why the ball bearings on the wheels last for decades although they are lubricated with the lowest quality lubricant (grease) compare to ball bearings in the engine that are lubricated by a very sophisticated oil that is also filtered!?
The metal surfaces with the modern technology are very slick so the friction between them is extremely minimal, add oil to it and its imposible to make wear occurr.
As long as the oil it is not loosing its quantity and its shape it meants it is there and it will do its job. If it is consumed or lost it means something is wrong and then you need to fill it up or change it.
Considering these facts logically i will never change the oil in my car as long as the oil is staying in a similar shape with the new one.
After 35000 km or 22000 Miles my oil is perfect. If you are brave enough follow my advice. I will lead 35000 km ahead of you.
Last edited by Artan; 10-25-2011 at 08:44 AM..
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