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Jul 10, 2023 · Find out now with the lessons learned from a practical test comparing 87, 91, and 93-octane for fuel efficiency and horsepower.
- Timothy Boyer
Aug 18, 2024 · Increasing pressure in the cylinder allows an engine to extract more mechanical energy from a given air/fuel mixture but requires higher octane fuel to keep the mixture from pre-detonating.
Apr 18, 2022 · This is why filling your car’s gas tank usually involves selecting from one of several gasoline options, each with a different numerical octane rating, and corresponding increase in price.
May 11, 2022 · “If you have gasoline that’s rated at 85 or 86 and the manufacturer suggests octane at 91 or 93, an octane booster may be just the thing. Similarly, if you own a vintage car with an...
Aug 4, 2019 · We tested higher octane fuel than manufacturers require on the Honda CR-V, BMW M5, Ford F-150, and Dodge Charger to see if it impacted acceleration or MPG.
- etingwall@hearst.com
- Print Director
Mar 8, 2022 · If you buy a car that requires 93 octane gasoline, you're going to spend 25-40 cents more per gallon at every fill-up for the life of your car. One of reasons some engines can produce a lot of power for their size is that they compress the fuel air mixture at much higher pressure.
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Higher octane fuel helps the fuel from igniting early. Early ignition can cause damage to the head and pistons, though it usually has to be severe. Modern cars have knock sensors that will listen for pre-ignition and will change the timing to help prevent this.
