Denny, why don't you ask about a product called Duracool, or R12a, if you are used to having a nice cool car then r134a will be a disappointment to you, it will be only about 80 percent as efficient as r12 and it will run at a higher pressure, the reliability of the system has been spotty and for the life of me, I do not know why auto makers went with it, other than it is eviromentally friendly. Understand the above is only my opinion, but I have had three cars converted from R134a to R12a Duracool, and they all have turned into mobile meatlockers, my last car was a 98 deville and its very cold, being in Georgia you may need all the cooling you can get. Some people may say that you are putting propane into the system, but it is a hydrocarbon base and it is totally non toxic and does not have CFC's. I hope some of *************** members will speak to this subject and I would like to see what they have to say on the subject. Good Luck Denny and go Navy.....