Sheetz convenience stores are lowering their gas prices a bit before the July Fourth holiday weekend. A news release Tuesday says the company will reduce the price of fuel to three-dollars and 99 cents per gallon for Unleaded 88 octane, which is known as E-15, and three-dollars and 49 cents for E85. Sheetz points out that both blends contain more ethanol and aren’t recommended for all cars. The prices will be available only through the July 4th holiday travel holiday.