In this video I test Royal Purple Max Clean Fuel System Cleaner in a Ford Explorer. I use a borescope camera to look into the engine and see how dirty the engine is before the fuel treatment and then after the fuel treatment. This is the first time I looked at intake runners and valves, and I also looked at the piston head. I followed the instructions on the container and Royal Purple did clean some carbon off the intake runners, valves, and piston heads. This is the best in fuel system cleaner I have used that goes in the gas (so far) Here is the fuel cleaner I used: http://www.amazon.com/gp/product/B00B1VBQRS/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00B1VBQRS&linkCode=as2&tag=chri0e2-20&linkId=FQMBFE4BPRUPHOAU Here is the borescope camera I used: https://amzn.to/2S5tNcX Seafoam in Car: https://www.youtube.com/watch?v=u6UeJXkzDW8 Seafoam in a Lawn Mower https://www.youtube.com/watch?v=WdT4DPFXIkM Here is the Techron Test: https://www.youtube.com/watch?v=h8i9qftqKNY Gumout "all in one" fuel system cleaner test: https://www.youtube.com/watch?v=5SoZnymBSC8 Lucas Fuel System Cleaner test: https://www.youtube.com/watch?v=FLhXqgEEYyI CleanBoost Maxx Test: https://www.youtube.com/watch?v=VDUogAQzLAc *If the video was helpful, remember to give it a "thumbs up" and consider subscribing. New videos every Thursday* -Website: http://www.ChrisFixed.com/ -Facebook: https://www.facebook.com/chrisfix8 -Twitter: https://twitter.com/ChrisFixed -Instagram: https://instagram.com/chrisfixit -Subscribe Here: null -YouTube Channel: null Disclaimer: Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.