I am 39 years old and drive a nearly 8-year-old Opel Astra H 1.8 liter 125 hp ... (1.eigene Hand owner) .with 85000 km mileage, already einigigen years ago it started the car to do my when gas and closing the throttle always something slightly jerky, I suspect that it is because of the many short trips. I am unfortunately only now met with Liqui Moly and was very skeptical, I ordered through Amazon, a 3-pack. Injection cleaner, hydraulic lifters and extra valve clean. are 300 km I now use the injection and hydraulic auxiliary and am equal to the highway to Holland. Hin way I am hm / h down 100 to 140 km / h have hardly noticed a difference ... then a quick snack at Mc Donald`s in Holland, then we went back home, some speed, provided it to the streets situation Lies. on the way home I noticed that much better depends on the car at the gas and much Ruige and calmly running speed that has become much better, almost like a new car, I know this is seen rubbish but subjectively, I could so describe it as if I 10 PS got it. I find it great, the Simple tile problem bucking when accelerating and decelerating has become somewhat better, but still noticeable, but I've still got a full bottle valve clean, I can still try, in the next tank of gas, I have nor can give a date in a free workshop to clean my throttle or if notwenig adjust, more I can not do I believe, from the outset gets my motor factory so delivered 0-W40, I behallte continue as at , in between I go every now and again super plus if the gasoline is favorable times at the gas station.