John’s Auto Care Often Asked About Premium vs. Regular Gas



Boulder motorists often ask the question: “Will using premium gas make my car run better?” The answer is simple. But first, let’s talk about what exactly premium gasoline is.

Different grades of gasoline have different octane ratings. Regular gasoline has the lowest octane rating and premium the highest. Most gas stations around Boulder, CO also carry a mid-grade that falls in between the two. The octane range for the different grades of gas varies by region due to altitude differences.

Engines require different octane ratings because of design differences. For example, turbocharged engines usually require premium gas.

There’s a sticker on your gas tank filler lid that tells you the minimum octane rating your car maker recommends.

For help identifying the type of gasoline your engine needs, come by John’s Auto Care in Boulder:

1900 55th St. #104
Boulder, CO 80301
303.442.2932

Boulder drivers should read their owner’s manuals carefully to see if it’s acceptable to use lower grades. With some cars in Boulder, CO it is; the engine control computer can adapt. Boulder drivers will lose some performance, but won’t do damage. With other engines, using a lower grade of fuel could result in serious and expensive damage; so you don’t want to save a couple of bucks at the pump only to pay it out a hundred fold at your Boulder repair shop.

Your car will run best on the type of gas recommended by the manufacturer.

Today’s computer controlled vehicles are optimized to run well on the recommended grade of fuel. Using a higher grade than is recommended will not give Boulder drivers any additional performance or better fuel efficiency.

Regulations require detergents for all grades of gasoline, so your engine will have the same protection, regardless of the grade of fuel you use. If you do hear some knocking or pinging from your engine, take it seriously and get your family car into John’s Auto Care. It may be a sign that you need a tune-up or some other repair.

In times of pricey gas prices, most Boulder auto owners are conscious of making their fuel dollar go further as we drive around CO. Be sure to use the right gas for your car. Keep your tires properly inflated and your vehicle well maintained and you will get the best fuel economy possible.

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John's Auto Care is an auto repair shop in Boulder, CO. Our mechanics treat every repair like it's our own car.

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