Gas prices; am I right? Good thing we don’t live in Oregon, where gasoline prices have skyrocketed to a breath-taking $9 per gallon. But still, the price for fuel right now is astronomical, so it is no surprise that so many drivers are looking for alternatives to spending their paychecks on their gas tanks. Aside from better car care and driving habits, there really isn’t much we can do to avoid paying for the fuel we need. This realization has often inspired drivers to explore the benefits of switching to diesel fuel.

But can you put diesel in a car that takes unleaded gasoline? If so, will it improve fuel functionality? If not, what would happen if you did anyway? Continue below to learn the difference between gasoline and diesel, plus whether you can use them interchangeably in vehicles.

Fuel System Repair Indianapolis Indiana 317-475-1846

Using Diesel in Lieu of Gasoline is Probably Not Possible

How old is your vehicle? Was it manufactured within the last twenty-five years or so? If yes, then a diesel fuel nozzle won’t even fit inside of your gas tank opening. Diesel fuel nozzles are differently-sized compared to standard unleaded gasoline nozzles at the local gas station, plus there is a special plate fitted under the gas cap on designated unleaded vehicles, making the insertion impossible. Sure, you could use your own fuel container and nozzle, or maybe your car’s older than twenty-five years old and without the hidden gas cap plate. Motorcycles don’t have the hidden gas plate either. But that’s not the end of the story. There are more reasons why you can’t put diesel into a vehicle that takes unleaded gasoline.

The Difference Between Diesel and Gasoline

So, what would happen if you put diesel fuel into a car that uses standard unleaded gasoline? To better understand what would happen and why, let’s explore the differences between diesel and gasoline. Compared to unleaded gasoline, diesel fuel is heavier. One gallon of diesel is a pound heavier than one gallon of gasoline.

Diesel fuel is also oily, and science tells us that oil doesn’t evaporate in the normal sense. The same can be said about diesel. Furthermore, diesel smells completely different than unleaded gasoline. So, when taking into consideration all of these differences, you can rationally come to the conclusion that nothing good would come of you swapping out your unleaded gasoline with diesel. In fact, you can expect your car to not start.

Why You Unleaded Gas Car Won’t Start if You Give it Diesel Fuel

You see, cars that are designed to use unleaded gasoline are equipped with a fuel injection system that uses fuel injectors to shoot gasoline into the cylinders of the engine. Once there, the fuel is ignited by the spark plugs, which then turns the engine over. But if you were to use diesel fuel in place of gasoline, the fuel injectors would transport the diesel into the engine cylinders, the spark plugs won’t be able to ignite the fuel. So, your car won’t start. Now, will it do any damage to your vehicle? That’s a whole other topic.

Will Diesel Damage an Unleaded Gas Engine?

Well, we know that an unleaded gasoline vehicle will not start if you give it diesel fuel, but we haven’t talked about whether it does any damage or not. Well, thankfully, no, there shouldn’t be any damage to your engine or any other system within the vehicle if you put diesel fuel in your unleaded gas engine car. However, you will need to drain the fuel tank and refill it with the proper fuel. This can be a really tedious process and should only be done if you are familiar with routine automotive work like oil changes and filter replacements. Otherwise, take your car into a local Indianapolis automotive repair shop for license car maintenance and repair services.

Does your car or truck need some fuel filter or fluid change service? Contact Northeast Auto Service at 317-475-1846 for professional car maintenance in Indianapolis, Indiana at a price you can afford. We work on all make and model vehicles, providing everything from oil changes to major engine work.

Fuel Induction Services

If your car is experiencing subpar fuel efficiency or engine operation, the fuel system is the first place you should be concerned about. Generally, a quick fuel induction service is the common, go-to maintenance to rule out more serious automotive problems. If your fuel economy issues or engine performance problems persist after a fuel induction, then your mechanic will have to look further.

What is fuel induction? Let’s first review the journey of your car’s fuel. When you engage the gas pedal, fuel from your gas tank is sent to the fuel pump, down the fuel lines, through the fuel filter, and into the fuel injection system. From there, the fuel injection system sprays fuel into the engine combustion chambers, where it meets air let in from the air filter. The air-fuel mixture is then ignited by the spark plugs, which starts your engine.

Also referred to as fuel injection or fuel system cleaning, fuel induction is a routine car maintenance service that eliminates the harmful carbon deposits produced by impurities in gasoline and fuel additives. These deposits can clog the fuel injectors and fuel lines, which can reduce the flow rate of fuel, or even block it altogether in serious cases, thus leading to engine performance issues and poor gas mileage. This service is suitable for both return and returnless fuel systems.

Signs That Suggest You Need Fuel Injection Cleaning

Refer to your owners’ manual for manufacturer recommendations on how often you should take your car in for fuel injection cleaning services. Between scheduled maintenance, you may notice signs that suggest your car needs fuel induction cleaning sooner than later. Here are some common signs to look out for:

⛽ Poor Gas Mileage
⛽ Filling Up the Tank More Often
⛽ Slowed Acceleration
⛽ Engine Knocking or Banging
⛽ Bumpy Idling
⛽ Losing Power While Driving

Fuel Induction Versus Fuel System Cleaner

You might think you can save time and money by purchasing some over-the-counter fuel system cleaning solution. Although such products are relatively inexpensive, they may not be the best solution for your automotive fuel system inadequacies or performance issues. Fuel induction services range in price depending on a variety of factors, namely the make and model of your vehicle, usually starting out around $150 or so.

A bottle of fuel system cleaner will run you around $35 or $40. Sure, the math says you can save a lot of money by choosing the DIY route, but professional fuel induction service is the better and smarter investment, especially for cars in serious condition. The money you save in the long run on fuel and auto repairs will surpass the cost savings you get from going the over-the-counter route.

Are you in need of a vehicle inspection or fuel injection cleaning? Contact Northeast Auto Service at 317-475-1846 for professional fuel system service in Indianapolis, Indiana. We also offer a generous selection of automotive service and repair coupons, discounts, and deals!

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Can You Put Diesel in a Car That Uses Unleaded Gasoline?