A new air filter can increase the life of the engine
In this first example, we can see three UOA results. In the first (starting at the bottom with August 3) we have only 4 ppm of silicon (dirt) which relates to 18 ppm of iron wear. The second sample, at the end of the month had a damaged air filter allowing 18 ppm of dust and causing 23 ppm of iron wear. For the third sample, in November, the filter is good, only allowing 5 ppm of dust, and only 14 ppm of iron wear.