NC TRACKRAT

Glad to know that some have gotten good results from the "quick-charge" cans but, given that any leaks in the system have been rectified, our vehicles require a specific quantity of refrigerant to give maximum cooling efficiency. Over or under that amount and you will not get optimum cooling. The pressure gauge on those cans you purchase at the auto store doesn't give you that information. The only way to do it correctly is to evacuate the system, be sure it holds with no leaks, then fill with the specified amount of refrigerant.