Worst experience with a shop that does coolant flushes. I took my car in to have system flushed (cost me $80). My system holds 16 quarts. I watched them & all they did was remove 1 gallon of anti-freeze, put in Super flush chemical & push in 1 gallon of fresh anti-freeze. They told me that is what the Rep from the flush machine company told them was all that was needed. THAT IS COMPLETELY WRONG. Anybody with any common sense knows when you flush something out it should be clean when you atre done. To do a cooling system flush you are to add the Super flush chemical, then run water through the system until the only thing coming out is clear water. Then & only then you push in at least 2 gallons of fresh anti-freeze to a cooling system that holds 16 quarts (4 gallons), this gives it a 50/50 mix. All I got for my money was a gallon of old anti-freeze removed & a new gallon installed. Not to mention the flush chemical was left in there to loosen up any crud in my cooling sytem, which I ha