Hello fellow Jeepers. I'm new to the Jeep world. Just purchased my first Jeep a week ago. 2020 Wrangler JL 2.0 turbo. I had to fill it up for the first time today. I used 87 octane after reading the book. It says to use 91 when towing or extreme heat. I'm in southern Louisiana. It's always extreme heat here but I'm sure not extreme as the book is talking about. My question is, what do you guys use.