Pulling oil samples. Ops bypass system

I pull out samples instead of changing my oil . I take samples about 10,000- 12,000 miles. Blackstone Labs sends me a report that tells me a lot about how the engine is running and if I need to do nothing, change filters, or change the oil. Doing this saves a lot of money. If you want to see the report let me know. I'm not being paid to promote any products. https://www.ops-1.com http://www.blackstone-labs.com/