Why do some types of gasoline cost more, and why is it cheaper in the winter? Should you spend more on higher octane gas? Here's a guide to all the gas types.
Selecting a grade of gasoline simply because it has a higher-octane rating might not be the best choice for your car or your budget. While some vehicles can benefit from premium gas, most drivers can save money at the pump by using regular unleaded in their vehicle without sacrificing performance.
What is octane rating? The octane rating on different grades of gasoline is a measurement of the fuel’s stability. Higher octane numbers mean greater stability. The greater stability indicates the gasoline’s resistance to preignition and the fuel’s ability to resist “knocking” or “pinging” during combustion. These sounds come from the air-fuel mixture detonating prematurely in the engine.
What gasoline or fuel should I put in my car? The fundamental rule of car maintenance is to follow the manufacturer’s guidelines found in the owner’s manual. It will show the minimum octane level for the vehicle and whether premium gas is recommended or required. There’s a distinct difference. If you unintentionally fill up your tank with a gasoline grade with an octane rating less than or greater than what is recommended for the car, there is no reason to panic.
Most insurance policies don’t cover accidentally fueling up with the wrong gasoline type. However, some insurers offer riders that do cover the mishap. So check with your insurer and your policy. It is important to pay attention at the pump, avoid distraction, and know your car’s requirements. In addition to petroleum-based fuel, diesel engines are capable of using biodiesel that is produced from raw vegetable oil, used cooking oils, and waste animal fats.
Why do some gasoline types cost more than others? The most noticeable difference between grades of gasoline is the cost, and motorists often wonder why higher-grade options cost more. The reason is that the additives and components used for boosting octane are generally more expensive to produce.
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