Advanced auto parts has a really nice A/C charge kit in a can.

It comes with a built in pressure gauge that tells you when the charge is low, full, warning, and danger-high.

I really like it and have had much success with them.

It is so easy to use, you just follow the directions and pay attention to the gauge and you can quickly charge two or three cars with one bottle depending on how low the system is.

Since I am mobile, most of my customers want the quick, cheap easy fix, so I have been very successful with this.

Keep in mind that any low system most likely has a leak of some sort, but this works really good with the systems that still blow cold , but just need a quick boost.

I really like the idea of the gauge on the can, it takes all the guesswork out of it.

I buy the more expensive kind that has the refrigerant and gauge in one can.

Just thought I would pass it on to you do it yourselfers who want to top off your system without taking it to the shop.

I would not recommend it if you had a major leak and your system was completely empty, then you would just be wasting your money.

It costs about $34.00 and you can usually top off two or three cars with it.

They also guarantee the product for 30 days if the can is faulty and leaks out.

John.