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:
Here is the borescope camera I used:
Seafoam in Car:
Seafoam in a Lawn Mower
Here is the Techron Test:
Gumout “all in one” fuel system cleaner test:
Lucas Fuel System Cleaner test:
CleanBoost Maxx Test:
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