Q: Can you address the difference, if any, between non-oxygenated versus other gas? One gas station I use has regular octane 87, premium octane 92 and non-oxygenated octane 91. They say their premium ...

CHARLOTTE — As gas prices go up and down, here’s something to ponder the next time you’re at the pump: Not all gas is created equal, and where you fill-up impacts your wallet and the performance of ...

Further complicating the natural gas picture is that there are two types of LNG fuel, and fleet managers must understand their differences. All LNG is a “cold” fuel; the warmer it gets, the more it ...