Faith can move mountains ....

or perhaps really cleans the valves or valve seats. I am currently still very skeptical, though I bring the products of the company. Liqui-Moly trust in. I have the means now about 120km in the tank. Time watching ... At the same time I have an oil change carried out with the addition of CERATEC. Result: At least here in advance about 0,5l less fuel consumption.