It's a new record

[Andrew]

Originally Posted by DreadPirateRoberts

What happens if you don't use premium?

If I don't use premium, the engine monitor will retard spark timing since it can't burn the fuel as efficiently, thus reducing horsepower and mileage. It also leads to dirty injectors. [not a car guy] Or something like that. [/not a car guy]

ARCO is bad because they only accept cash or debit. I like to pay for gas on my Chevron or Mobil cards so I can get a monthly statement and see my fuel expenses each month.