If you’ve ever put the wrong type of gasoline in your car you know how it feels to be stranded on the side of the road with a Make sure you know what kind of gasoline your car needs before you fill up.

But what happens if you accidentally put premium gasoline in your car that requires regular?

Here’s what you need to know.

How will premium gasoline affect my car?

If your car requires regular unleaded gasoline and you accidentally fill it up with premium don’t panic. Your car will run fine on the higher-octane fuel for a little while. In fact it might even run a bit better because premium gasoline has a higher octane rating than regular.

But here’s the thing: Your car’s engine is calibrated to run on regular unleaded gasoline not premium. So while the higher-octane fuel might not hurt your car in the short run it could cause long-term damage.

Over time using premium gasoline in a car that doesn’t require it can lead to engine knock. Engine knock is a knocking or pinging sound that happens when the air-fuel mixture in the cylinders is detonating too early.

Detonation is when the air-fuel mixture ignites spontaneously instead of spreading from the spark plug. When it happens too early it causes a knocking sound and can damage the engine.

In addition to engine knock using premium gasoline in a car that doesn’t require it can also lead to decreased fuel economy. That’s because the higher octane rating of premium gasoline means that it takes more energy to ignite the fuel.

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So if you’re using premium gasoline in a car that doesn’t require it you’re essentially wasting money.

What should I do if I accidentally put premium gasoline in my car?

If you’ve accidentally put premium gasoline in your car the best thing you can do is to keep driving until you can get to a gas station where you can fill up with the correct type of fuel.

If your car starts to run poorly before you can make it to a gas station try using a fuel injector cleaner. This can help to clean the valves and prevent engine knock.

Can I switch to premium gasoline if my car requires regular?

If your car requires regular unleaded gasoline and you want to switch to premium you can do so without damaging your car. In fact making the switch to premium gasoline might even improve your car’s performance.

However you probably won’t see a significant difference in fuel economy. And if you switch back to regular unleaded gasoline you might notice a decrease in performance.

So if you’re thinking of making the switch to premium gasoline it’s really up to you. If you want to improve your car’s performance go for it. But if you’re just looking to save money stick with regular unleaded gasoline.

Table of Contents

What are the effects of putting premium gas in a car that requires regular?

Answer 1: There are no major effects.

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The car will run a little bit smoother and may get slightly better gas mileage.

Will putting premium gas in a car that requires regular void the warranty?

Answer 2: No it will not void the warranty.

Can I switch back to regular gas after using premium gas?

Answer 3: Yes you can switch back and forth as needed.

There is no harm in using premium gas in a car that requires regular.

Will my car’s performance be better if I use premium gas?

Answer 4: There may be a slight difference in performance but it is not significant enough to justify the higher cost.

How much more does premium gas cost per gallon?

Answer 5: Premium gas typically costs about 10-20 cents more per gallon.

How often should I use premium gas in my car?

Answer 6: Unless your car requires premium gas there is no need to use it.

I accidentally put premium gas in my car that requires regular.

What should I do?

Answer 7: There is no need to do anything.

The car will run just fine on the premium gas.

What are the long-term effects of using premium gas in a car that requires regular?

Answer 8: There are no long-term effects.

You can use premium gas occasionally without any problems.

Will using premium gas damage my car?

Answer 9: No using premium gas will not damage your car.

Should I use premium gas all the time if my car could use it?

Answer 10: No there is no need to use premium gas all the time.

Regular gas is just fine for most cars.

Is premium gas worth the extra cost?

Answer 11: It depends on your personal preference.

Some people feel that the slightly better performance is worth the extra cost while others do not.

My car is starting to knock.

Should I switch to premium gas?

Answer 12: No switching to premium gas will not fix the knocking.

You should take your car to a mechanic to have it checked out.

I’m trying to save money on gas.

Should I use premium gas?

Answer 13: No there is no need to use premium gas.

Regular gas is just fine and will not damage your car.

My car is running rough.

Should I use premium gas?

Answer 14: No using premium gas will not fix the problem.

You should take your car to a mechanic to have it checked out.

I’m trying to improve my car’s performance.

Should I use premium gas?

Answer 15: No there is no need to use premium gas.

Regular gas is just fine for most cars.

Drew Dorian

I love cars and I love writing about them

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