If there was a King of the hill for fuel additive, this would be it. By far the best pour in cleaner on the market. BG 44K is legendary for carbon cleaning. Use it at every oil change for best results.
BG 44K Platinum Fuel additive.
#1 fuel system cleaner among automotive professionals. It cleans the entire fuel system, including fuel injectors, intake valves, ports, fuel filters and combustion chambers.