I have a 2015 Corolla LE with 86k miles and after getting my last gas fill up it started immediately idling rough and feeling like it was almost going to stall. Never once did I experience this before that, could it of been bad gas? If so, any suggestions? I also just went to advance auto parts for them to check my battery (still the original that came with it) and found it was leaking battery acid from the positive terminal yet the battery, alternator, and starter all checked out in good condition. I’m assuming the battery wouldn’t be the cause of the rough idling etc.