 Don’t Overlook Octane:
Different cars require different levels of octane, which is the measurement of a gasoline’s ability to resist engine knock – a rattling or pinging sound that results from uncontrolled combustion in the engine. The right level of octane will prevent engine knock and help ensure optimum performance. To determine the appropriate octane level, be sure to check your car’s owner’s manual for the manufacturer’s recommendation.
The most common levels of octane are 87 (regular), 89 (mid-grade) and 93 (premium). These levels are indicated on each gas pump at the station. Higher-octane gasoline can be helpful particularly for car engines that are experiencing knocking or pinging. However, octane is only one component to consider when shopping for fuel.
Consider Cleaning Capabilities:
In the mid 1990s, the US Environmental Protection Agency established minimum standards for cleaning agents that must be added to auto fuel, and most gasolines today contain just that minimum amount. Unfortunately, for some vehicles, this minimum level of detergency can leave carbon deposits on important engine parts over time. Carbon deposits on an engine are similar to the “gunk” that can build up over time inside your oven at home. This is particularly true of low-detergent gasolines typically sold at discount gasoline stations, grocery stores and wholesale club stores. The deposits that low-detergent gasolines leave behind in some cars can cause hesitation during an engine’s initial warm-up phase. Removal and prevention of these deposits may help reduce hesitation. Learn about the benefits of high-detergency gasolines, such as Shell V-Power
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