I need to recharge my AC, as I've lost about half the charge since last summer. It still works, just not very well. While doing so I plan to add a little oil. I see the system calls for PAG. However, I cannot find PAG, only ester. The stores I went to aren't just out of stock on PAG, they don't stock it at all!
Searching gives contrary results - some say PAG and ester don't mix, while others are saying that ester is compatible with all PAG oils.
Just wondering what is correct. Should I search harder for PAG or is it OK to get the ester?