Depends on the station too. Some just have one tank of regular and there is a additive called additech that is mixed in at the pump. Can't remember what brand stations used it, it has been years since I was in petroleum service.

edit: shit nevermind additech is an additional additive that you can get blended in if you want. Sorry it's been like 10 years.

There are multiple floors for more pigs and it probably has several large freight elevators, not a pulley system.

If it happens again, take a needle and a lighter and get it red hot and poke a hole in the nail. Trust me. I heard of it and was like 'yea fuck no'. It took me a day of not wanting to try it but the throbbing and pain is instantly gone when you relieve the pressure.

You don't feel it at all either but it is a little intimidating. Did it with a chair in college, went to scoot up and the actual seat pad came up and I sat on my finger between the chair frame and wood on the bottom of the cushion.