Now, before you tell me that none of these really work and I should “take it to a professional”, yeah yeah I know that. I know that the AC is a sealed system that should not leak the stuff out. It is funny seeing the ads that say “refrigerant evaporates over time” and I just lol. But anyways, I am just looking to try an AC recharge kit to observe how long it lasts. They are cheap as hell so its worth a shot if I can get a couple months of AC out of it. So I just want to know what brands others might recommend.

I’ve got a standard R134A system in my Miata. I dont use it much but its useful on rainy days when putting the top down is less than ideal.