Learn when premium fuel is actually required, what the different grades mean, and how to avoid paying too much.

We’ve been burning gasoline for well over a hundred years now, but some misconceptions about fuel—especially when it comes to octane—are so ingrained in the popular consciousness that even those of us ...

Some new cars claim to require premium fuel, others recommend it and most new vehicles on the road today are perfectly happy with regular fuel with nary a hiccup. Simultaneously, we're bombarded by ...

You have a choice when you pull up to the pump. Most gas stations have three choices for fuel for your vehicle, based mostly on octane ratings. Which one is the best for your vehicle? A lot of that ...

In most gas stations, next to the regular unleaded gasoline and diesel nozzles, one can find these additional pumps with labels promoting their benefits. That begs an obvious question: what are these ...

The answer is yes: You can mix 87 and 91 octane gasoline without blowing your engine to hell. With that out of the way, let's discuss what mixing different octane fuels does to your engine in terms of ...

Gasoline is a mystery to most hot rodders. 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 ...

Ethanol blending has fundamentally changed India’s petrol landscape. On the downside, ethanol has about 30 percent less energy per litre than petrol. This reduces fuel efficiency by 5–10 percent in ...

The higher the fuel’s octane rating, the less likely it is to prematurely ignite and cause engine knocking. phive2015/Adobe Stock We see the numbers every day at the local gas station, with gas sold ...

You pull up to the pump and you are presented with a few choices, and we're not talking about different fuel types here. We're talking, of course, about octane ratings. Those are large figures at the ...