What is octane rating? What is cetane number? Gas & diesel ratings. What is octane rating? What is cetane rating? When purchasing gasoline or diesel fuel you’ve likely noticed the selection of numbers ...

We may receive a commission on purchases made from links. Most gas stations have three options that you can put in your vehicle: regular, mid-grade (plus), and premium. These labels are also often ...

Our gas is listed in a range of octane offerings, but American automakers are looking to simply that. By doing so, they say, they'll clean up the air, boost fuel economy, and save us money at the pump ...

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 ...

Until electric cars and hydrogen fuel cell vehicles become the norm, most of us will drive automobiles that run on fossil fuels. We know it is not good for the environment, but it is the only option ...

The American Fuel & Petrochemical Manufacturers believes a transition from the federal Renewable Fuel Standard to a fuel-neutral, 95 research octane number (RON) could better address the needs of ...

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 ...

Raising the octane in gasoline -- seen as a way to improve fuel economy and reduce emissions in today’s high-tech turbocharged, direct-injected engines -- looks like it will get some attention from ...

Filthy myths run rampant when it comes to understanding race gas. Some say that the higher the octane the slower the burn rate. Others claim that too much octane reduces horsepower. Unfortunately, ...

With that in mind, the EPA is currently looking into this issue, though nothing will likely get done until the next set of fuel economy and emissions standards take effect after 2025. Still, lobbying ...