Comments by "Makan Tahi" (@makantahi3731) on "Are You Changing Oil Too Often? You'll Be Surprised By These Lab Results! BMW Oil Analysis PART 1" video.

  1. thank you for your research, but it is made on wrong way: if you wanted good numbers you should do it on this way: 1 install new oil filter, air filter and replace old oil with new, 2. drive it for 100miles and then replace all 3 things( do not throw it away, store it for use after research is finished) to clean engine from old dirt 3. install all 3 things new and drive it for next 5k and then take sample(do not replace oil, and filters, just take small amount of oil and send it for analysis), and do same for 7.5k and 10k. 4. now you would have consistent analysis numbers , because is not logical that 7.5k oil is cleaner than 5k oil(in you case is because 5k oil collected all dirt from old oil and old oil filter 5. dirt in oil works as positive loop-as amount of dirt rises, it produces more new dirt as milage rises, dirt in oil works as sand paper. I replace oil and filter every 5-7000km and on 200000 chain is still as new, my oil is never black on exchange, it becomes brown
    3