I just bought a gauge from Walmart and it showed I was just a tad low so I thought about topping up and since Walmart also sells a refrigerant that is compatible with 134a, I bought a bottle. But I wonder if it is poor quality or if it will not work as well as the stock stuff.

Any comments on this? I did a search, but no one's seems to have asked this question before.

 

Quick question, have you done AC work before? All 134a is basically the same as it has to pass a quality test

 

Yeah, because if you "have" to ask it, you have no business screwing with an automotive A/C system.

Either take the vehicle to a shop where a qualified technician can service it or start doing some studying so you understand what is going on.

Steve

 

Yea depending on temps and humidy the low side and high side temps will vary. Also you have to know how much you are putting in as to much freon is bad for the system. Also, A/C here in az really only blows about half the outside temp, towards the end of the day when its about 110-120 pressures are nuts. You really need a good idea of what you are doing.

 

I've topped up another truck I used to own with success. It was low according to the gauge so I topped it up. Still didn't work so started digging around and found a pressure switch had stopped working. After replacing it, the A/C worked great on the truck until I sold it. But I wasn't as concerned about it as I am with this newer truck. The newer trucks seem a little more "sensitive". I just want to make sure there are not quality differences in refrigerant.

 

A little cranky Steve boy. Thanks for the valuable advise Dad.

 

When I tested the system it was not that hot outside (maybe 80 F) and it was on the very low side of still being good. So I'm not terribly concerned about it yet. I'm waiting for a really hot day here to check the pressure again. A/C performance seems fine, especially since I put on my e-fans. What concerned me about the low pressure was that I wanted to make sure the system stays lubricated. But I guess I'm far from that point with the pressures I have now. I'm sure a hot day will show the pressure is probably fine.

 

A/C oil lubricates the system, not freon.

 

I thought the lubricant was in the refrigerant?