When my car knocked down in the street upon going to work I decided to have it checked to get that old sludge out and give my car needed attention. The person who attended me assured that everything will be fine and it would only take a few minutes. I was glad that the whole process only took 20 mins and I was still not late in going to work. The whole experience was pleasant and I will go back for some regular clean to keep my car in good condition.