Every now and again read about it or heard about it and now I thought I do not begrudge the car even a little makeover. So the "magic bullet" times and ordered from the tank. What can I say: work, the engine runs more quietly, he felt better depends on gas and otherwise I can not say anything derogatory. It has not harmed, the positive effects (whether imagined or not) seem to be there. A positive side effect, the indicator of the exhaust system that concerned from time to time at cold start now remains off. For the moderate price I can only advise: try making wise :)
