We'll let you in on a secret: Midgrade fuel doesn't really exist. In most cases, refineries do not produce a midgrade gasoline blend; instead, the middle-octane option is blended at the fuel pump from a given gas station's supply of regular and premium gas.

Is mid-grade gas regular and premium mixed?

Can You Mix Regular and Premium Gas at the Pump? You can mix regular and premium gas to get a mid-grade octane. In fact, this is what most pump stations do to get a mid-grade-level octane gas. However, mixing premium and regular in a premium car will reduce efficiency and cause it to lose its power.

Is midgrade gas blended at the pump?

When you squeeze the midgrade handle you get a cocktail of the two fuels, "splash blended" as you pump. Thank the EPA, because it tightened underground storage tank rules in 1988 and again in 2015, causing a lot of service stations to dig up and replace their old gas storage tanks.

What does mid-grade gas mean?

Typically “regular” gas is 87 octane, “midgrade” is 89 octane and over 91 octane is “premium” gasoline. Some states label top-tier gasoline with 93 octane as “ultra” gas. The numbers represent the level of octane.

Can you mix regular gas with mid-grade?

Yes, drivers can mix the two types of fuel. The combined gas types will result in an octane level somewhere in the middle — something the vehicle “will survive,” according to The Drive.

That's What Happens When You Put the Wrong Fuel in a Car

22 related questions found

Should you use mid-grade gas?

There's no advantage to running mid-grade or premium gas in your car. If your car has a label saying "premium fuel required," you should always buy the higher grade fuel. Your car's knock sensor should prevent problems, but it's better not to risk it.

Is there a difference between regular and mid-grade gas?

What is the difference in octane levels? ... Typically “regular” gas is 87 octane, “midgrade” is 89 octane and over 91 octane is “premium” gasoline. Some states label top-tier gasoline with 93 octane as “ultra” gas.

Can I use mid-grade instead of premium?

Can I use midgrade fuel instead of premium gas? Yes, just as you can use regular fuel instead of premium gas. Apart from the cost savings, using lower-octane fuel generally doesn't pay off however, as fuel economy and performance generally suffer as a result.

Is mid-grade gas unleaded?

In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88–90 (midgrade), and 91–94 (premium). Gasoline with an octane rating of 85 is available in some high-elevation areas of the U.S. (more about that below).

What cars use mid-grade gas?

15 'Regular' Cars That Take Premium Fuel

• Buick Envision (with 2.0L turbo)
• Buick Regal (all models)
• Buick Regal TourX (all models)
• Chevrolet Equinox (with 2.0-L turbo)
• Chevrolet Malibu (with 2.0-L turbo)
• Fiat 500L (all models)
• GMC Terrain (with 2.0-L turbo)
• Honda Civic (with 1.5-L turbo)

Can I mix 87 and 89 gas?

You won't damage your engine at all if you use a higher octane - you're just wasting money. In North America, service stations blend the higher octane (like a 92 or 93) with a lower octance (87) for the mid-range fuels (89-91) so you're really not getting your money's worth.

What octane is mid-grade?

Regular (the lowest octane fuel–generally 87) Midgrade (the middle range octane fuel–generally 89–90) Premium (the highest octane fuel–generally 91–94)

Can you mix 93 87 gas?

If you usually fill your tank up with 87-octane gasoline and you accidentally put in a higher octane blend (say, 91, 92, or 93), don't worry. ... You're actually filling your car or truck with a different blend of gas, which means it will burn differently in your engine.

Can you mix different grades of gas?

It's perfectly fine to combine different octane levels of gas, as long as they're both unleaded. The only difference between the two blends is their octane content.

What happens if you mix different octane gas?

Mixing fuels of two different octanes will result in a tank of fuel with an octane rating somewhere between the two fuels, depending on the amounts of each. That said, if your vehicle requires premium fuel, it's a good idea to top it off with the good stuff as soon as you're able.

What number is mid-grade gas?

Gas stations in the United States generally offer three octane grades: regular (usually 87 octane), mid-grade (usually 89 octane), and premium (usually 91 or 93).

Does mid-grade gas get better mileage?

Consumer Reports lists several myths that have been rumored to improve gas mileage but which don't really make much of a difference in modern cars. ... One myth about ways to get better gas mileage is that premium gas in general has higher mileage. In fact, it barely affects performance.

Is it bad to mix gas from different stations?

Gas stations use different additives in most cases, but there is nothing wrong with mixing stations, or even octane ratings. If you mix 93 and 87 you get 90, mix 89 and 93 you get 91.

What happens if you accidentally put regular gas instead of premium?

Using regular gas in an engine that requires premium could void your warranty. That is most likely to happen if using regular causes severe engine knock or pinging (premature ignition of the fuel, also known as detonation) that damages the pistons or other engine parts.

Which gas is better 87 89 or 93?

Regular gas is rated at 87 octane in most states, while premium gas is often rated higher at 91 or 93. ... Essentially, the higher the octane rating, the lower the likelihood that detonation happens at the wrong time. On occasion, this occurrence will likely not harm your vehicle.

Is it okay if I accidentally put premium gas in my car?

If you accidentally put premium fuel into your regular gas car, nothing significant will happen.

Does putting premium gas make a difference?

The main difference with premium is its octane rating — 91 or higher compared with 87 for regular octane. The higher octane gives premium gas greater resistance to early fuel ignition, which can result in potential damage, sometimes accompanied by audible engine knocking or pinging. ... Premium gas is not “stronger” gas.

What is the best grade of gas to use?

What octane gas should I use? You should use whatever octane level is required for your car specified by the owner's manual. Generally, regular fuel is 87 octane, premium is 91 or 93, and midgrade is somewhere in the middle; often 89. To understand what octane means, we first have to look at the concept of preignition.

What is mid grade?

Filters. Of a medium grade; not premium or low-grade. adjective.

Is it OK to use non ethanol gas in my car?

The short answer is, no, ethanol-free gasoline is not bad for your car. Most cars today can run on ethanol gas blends up to E15 (15% ethanol) and on non-ethanol gasoline. And flex fuel vehicles can handle up to E85 (85% ethanol) without a problem.