Gasoline is a mystery to most Ford buffs. For the most part, we just fill up the tank and forget about the fuel. The most difficult question is whether to step up from 89 to 92 octane. As you might guess, there’s much more to gasoline than just regular or premium. With the generous help of Unocal 76’s principal engineer for fuels technology, Tim Wusz, we’ll take a quick look at gasoline and how that aspect of hot rodding is undergoing some significant changes.