Save Expense – Skip Premium Fuel

If driving is overly expensive, rethink your ideas about premium vs. regular unleaded gasoline. Fortunately, you will almost never want anything more costly than regular gasoline.

There aren’t engine cleaning benefits, and costly fuel usually doesn’t mean a longer-lasting engine. It’s just marketing. Start with your manual. If premium fuel isn’t a listed requirement, you don’t need it. Don’t give the oil companies more profit!

When engines aren’t made for premium gas, it means they never have a use for the higher-octane fuel. It is all about combustion. Premium gasoline ignites at a higher temperature, so it can deal with high levels of compression before reigniting. Premium gas also has lower levels of heptanes, and that also makes it less likely to ignite at low temperatures. Even the Federal Trade Commission agrees – there’s no reason for it in the average tank.

If your owner’s manual does list a need for premium gasoline, you may not always want it. This is especially true for autos built since 1996 because those engines are likely to have technology that adjusts timing properly. With higher-performance engines that are meant for premium gasoline, the high-compression fuel can mean better performance. The expensive gas also prevents pinging or knocking sounds. But the difference is usually unnoticeable, and the price difference is pretty big. If your engine preignites fuel with normal driving, it’s a different story. For these vehicles, use your best judgment or ask our ACE-certified technicians about using the right gasoline.

Is There a Diesel vs. Gasoline Rule?

While it’s not usually wise to use premium gas instead of regular never try diesel in a gas engine. If you drive a diesel engine, filling the tank with regular unleaded will cause it to stall. You will have to pony up for a system flush. Diesel is a little grimier and much thicker than gasoline, and the engines are different in important ways. These don’t have spark plugs. Instead, the fuel is injected directly and ignited by heat. With gasoline, air and fuel are combined first and then the spark plugs ignite the mixture.

Contact Christian Brothers Anytime

If you have uncertainties about how to fill your gas tank or if you’re having any trouble with your fuel system, give our trusted team in Corpus Christi, TX a call. We advice, maintenance, repairs and more.