Many of our customers think that using premium fuel will mean a longer-lasting engine, and they even tell others about premium fuel having better detergents than regular fuel. It’s a false idea pushed by the oil industry. If you’re uncertain about what to use to fuel your engine, first read the owner’s manual. If premium is ever needed, it will be listed. Don’t give the oil corporations more profit!
When auto engines aren’t created for premium gas, they will not ever need the higher-octane fuel. It is all about combustion. Premium gas ignites at a higher temperature, so it can handle higher compression before reigniting. Premium gas also has a lower concentration of heptanes, which also makes it less likely to ignite at low temperatures. Even the U.S. government agrees – there’s no benefit for it in the average tank.
If your owner’s manual does call for premium fuel, chances are you don’t always want it. If your car isn’t more than 10 years old, that’s particularly true because those engines are likely to have technology that adjusts timing properly. With higher-performance engines that are meant for premium fuel, the lower ignition rate can mean better performance. The premium fuel also prevents knocking or pinging noises. But the difference is usually unnoticeable, and the cost difference is serious. The only exception is for automobiles that have knocking noises when regular fuel is being used, even under everyday driving conditions. For these vehicles, do a little more research or speak with our ACE-certified auto experts about using the right fuel.
Is There a Diesel vs. Gasoline Rule?
Gasoline and diesel don’t play nicely together. You could stall the engine and make it unusable. You’ll need a complete flush. Diesel is a little grimier and much thicker than unleaded, and diesel vs. gas engines are different in important ways. First, diesel engines don’t include spark plugs. Instead, the fuel is injected directly and ignited by heat. With gasoline, fuel and air are mixed first and then the spark plugs cause ignition.
Contact Christian Brothers Anytime
If you have uncertainties about how to choose fuel or if you’re having any problems with your fuel system, give our trusted technicians in Fort Worth, TX a call. We do maintenance, pre-pruchase checks and repairs.