If you decide to use one of these products please be aware that you will never be able to use A/C service gauges on the system or use a refrigerant recycler on your car in the future. Doing so will ruin the gauge set and the refrigerant recycling machine.

I'd NEVER consider using one of these products but if you do you have a responsibility to disclose the fact that you have done so to anybody that will ever buy your car or any shop that is thinking about performing A/C work on the car.