In July 2013 bought sealant and yesterday, 05.19.2014, been used. Works just described (with understandable images!) As in the short manual. Remove valve insert, sealant fill and inflate tires and then I was able to continue. ME earned five stars, as well as the price-performance ratio is great. By the way: Do not forget good visible position before driving the 80s km / h sticker in the cockpit and as soon as possible to ensure fd tire exchange.