This is shot of a few drops of Joe Gibb's Driven BR15W-50 break-in oil drained from the oil pan after 10 full-throttle dyno runs, (left), and then after 15 more full-throttle dyno runs, (right). Notice how the oil's doing its job removing combustion contaminants from the engine (the reason it's darker). All new engines get fresh oil after the first 25 pulls on our dyno, and we cut open the oil filters to inspect for any debris. This motor's filter checked out ok.