Save Expense – Avoid Premium Gas

Many of our automotive customers think that using premium fuel will mean a longer-lasting engine, and they share the incorrect ideas with anyone who will listen about premium fuel having better detergents than regular fuel. It’s mostly just a marketing ploy. Read the owner’s manual. If premium is ever required, it will tell you. Don’t give the oil corporations more profit!

When automobile engines aren’t created for premium gas, it means they never need the higher-octane fuel. It has to do with how the fuel is ignited. Premium fuel ignites at a higher temperature, so it can deal with more compression before reigniting. Premium gas also has lower levels 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.

Even if the owner’s manual does ask for premium gas, you may not always want it. If your car isn’t more than 10 years old, that’s particularly the case because those engines are likely to have technology that adjusts to different octanes. With engines that are designed for premium gas, the lower ignition rate can mean better performance. The pricey fuel also prevents pinging or knocking sounds. However, unless you’re pushing your engine to the max, the difference in power is minimal but the cost is far greater. The only exception is for engines that have knocking noises when regular fuel is being used, even under normal driving conditions. For these vehicles, do a little more research or speak with our ACE-certified technicians about using the right gas.

Do I Always Need Gas Instead of Diesel?

While it’s not usually wise to use premium gas over regular unleaded never try diesel in a gas engine. You could stall the engine and need to be towed. You will have to deal with the costs for a system flush. Diesel is thick and oily compared to gasoline, and gasoline engines are different in important ways. These don’t include spark plugs. Instead, the fuel is ignited by the heat of compressed air, which is injected right in the chamber. With regular gas, air and fuel are combined first and then the spark plugs ignite the mixture.

Call Christian Brothers Today

If you have questions about how to fill your gas tank or if you’re having any issues at all with your fuel system, give our trusted mechanics in Spring, TX a call. We advice, maintenance, repairs and more.