I have 3 questions and I appreciate all responses

First off......I noticed my A/C wasn't working as good lately. Brought into dealership and was told it was a bad expansion vale. They replaced but A/C seems the same. Has anybody had same problem?

2. - I also stopped into one of these 5 minute oil change places to get oil changed. While there, I had them flush the radiator. They put in gold anti-freeze. When i returned home i was checking owners manual for something else and noticed that manual says to use only HOAT type anti-freeze. The mechanic at the 5 minute oil change showed me the anti-Freeze he was putting in and it said for ALL makes and models. I'm thinking this is ok but just wanted to get some feedback.

Lastly, this morning my battery was completely dead. Replaced with new one but now my keyless remotes wont work. I tried following directions in manual with no success. Dealership says I have to come in and leave truck with them. Does anybody have any quick fixes to this?

I very much appreciate all feedback

thanks