red line complete fuel system cleaner borescope results. check out the intake valves with a lot of carbon buildup. also see my other videos with seafoam , crc intake valve and turbo cleaner, stp fuel additives and other fuel treatment.
NOTE: I am not sponsored or affiliated with Redline and/or its partners. This is solely my own interest and out of my own pocket. Following my initial video of it being tested on my celica, I decided to do this on a Nissan Altima. The results are considerably better than I'd expect. Just like my celica, the results speak for itself that this product actually works.