Anyone using 93octane from Speedway on Long Island.Is the quality good.I am running a Whippled merc 525,I used Hess gas in the past,just wondering if Speedway is as good.Dont want to blow my motor.Or should I go to BP or Sunoco.Thanks in advance for any advice.

Older but interesting article, scroll down to the comments and read what a few fuel delivery drivers had to say. Based on article I would stay away from Speedway for performance setup, now if you're filling a Toyota you should be fine.
http://www.thegasgame.com/2009/09/30...e-1-gas-brand/

I've been using Speedway here in Illinois pretty much exclusively for the last 3-4 years. Never had one fuel related problem. Join the rewards program. I average 100$ a year in free gas pretty easily as I use them for my company truck as well.

I know here in pa. the philly area, its all the same, sunoco, speedway, wawa, giant, bp, turkeyhill, Lukoil, and any other fuel stop, different brands might inject some different detergents while being loaded, but the base fuel is all the same and loaded out of the same terimals, but in the higher populated areas, (big cities) and surrounding areas they use RFG fuel, which stands for reformulated gas, it supposedly burn cleaner, less hydrocarbons, and it is clear looking, we can haul RFG gas to the Harrisburg area, but we can not load gas in the Harrisburg area and take it to the Philly area...