This product really works. It cleans my valves and cylinders better than the others. I use it to prevent carbon build up in my engine. When I remove my intake manifold and valve covers you can see how well it has kept my engine clean. I have over 130k miles on my car and my has stayed clean and problem free.
Lean fuel mappings and lack of proper additive package in even Top Tier rated petrol mean deposits on injectors, valves, intake system start building after just 1,000 miles (google for studies w/ pics). Additionally U.S.A. ethanol blended fuel starts to degrade as soon as it leaves the refinery. I have relied on Red Line fuel additives and oils for high performance motorcycles, cars, daily drivers, even lawn equipment.
My motorcycle is 10 years old so it has plenty of garage time. It was idling rough so I thought I would give this a try. It now idles smooth and seems to have brought it back to like new performance. Good stuff.
Using this to clean and maintain the fuel lines of our cars. Will buy bulk again when I run out. Reviews and data on PEA look good for keeping the lines/fuel flow clean.