Doesn’t matter it’s fine either way. Chances of anything bad happening on unleaded is like 1 in 1 billion. Chances of anything bad with diesel like 1 in 10 billion.

On a dead battery 15 minutes unless on a highway won’t be enough.

Lol you’re not a mechanic. Alternatives won’t charge a dead battery enough at low speeds on a short trip. Please leave the discussion to people who actually know something.

No need for any of that. Just fill it while running

People did it all the time with no issues in the 70s cigarette in hand, car running.

99.99999999% chances it’ll be perfectly fine and I’ve done it fairly often never once issue other than someone telling me I should turn off my car. It takes crazy low probability exact unfortunate circumstances for anything bad to happen.

So is static electricity from getting out of your car.

Or just fill the tank while on. Ain’t shit going to happen.