Is it OK to mix 87 and 89 gas?

You can mix 87 and 89 gas. However, it's a bad idea because the two fuels have different octane ratings. When you put them together in your car's tank, the engine will try to adjust to the lower octane rating of 87 and could potentially cause damage.

Is 87 and 89 gas the same?

Gasoline with an octane level of 87 is considered “regular,” with gasoline sold at 89 octane often labeled “midgrade” by most gas stations.

Is it better to use 89 gas instead of 87?

But if the vehicle manufacturer says your engine needs only 87-octane regular, that is what you should use. The higher octane of premium gas won't make your car faster; in fact, the opposite is possible because higher-octane fuel technically has less energy than lower-octane fuel.

Is it bad to mix gas octanes?

Of course, you can stick with regular gas or dilute it with premium gas to save money. It is safe to use fuel with higher octane in standard cars that require only regular gas.

Is it bad to mix different gas grades?

Can I mix premium and unleaded gas? 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.

Is it OK to mix 87 and 89 gas?

Can mixing gas damage your car?

"In most cases, the vehicle will run fine, but you may experience less power and a decrease in gas mileage. In more serious cases, you may hear engine knocking or valve chatter because the fuel isn't burning right.

Is it bad to switch between regular and mid grade gas?

Can I use regular gas if my car requires premium? Experts advised against switching to regular gas if a vehicle requires premium. If a vehicle requires high-octane gas but is filled with lower-octane gas, drivers risk damaging the powertrain, which includes the engine, transmission and other components, MacDonald said.

Does premium gas get better mileage?

Premium gas has a higher resistance to engine knock in luxury and performance vehicles with turbochargers or high-compression engines, so you can hit that horsepower smoothly. Additionally, premium gas can increase fuel efficiency, potentially bringing better gas mileage for longer while decreasing emissions.

Should I be using 89 gas?

“Use premium unleaded gasoline with a posted octane rating of 91 or higher. If the octane rating is less than 91, you could damage the engine and may void your vehicle warranty. If heavy knocking is heard when using gasoline rated at 91 octane or higher, the engine needs service.”

What cars need premium gas?

Luxury cars may require premium gas if they have a high performance or turbocharged engine. Even if you're not buying a luxury car, more luxurious trim levels for a car may offer engine options that require premium gas.

What can I add to my gas to get better mileage?

What is the difference between 87 octane and 89 octane?

Octane amounts indicate how volatile a particular grade of gasoline is. Regular gas carries an octane level rating between 85 and 88, with an average rating of 87. Plus grade gas carries an 88 to 90 octane level rating, with an 89 average. Premium gas comes with a 90 plus octane rating that averages out to about 92.

Can I switch back to 87 gas?

In short, yes, you can usually switch from premium to regular gas for a short time**. But if your car requires premium gas, then your engine may start to underperform. Many people get confused about the difference between premium and regular gas, so it's hard to understand why some cars require one or the other.

Can you mix regular and midgrade?

Gas Blend does the math for you and tells ya. 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 grade of gas is best for my car?

The best type of gas to put in your vehicle is whatever octane level your car's owner's manual specifies. Generally, here's what you need to know about octane gas types: Regular fuel is 87 octane. Premium is 91 or 93.

Does putting different types of gas mess up your car?

Typically, although there are some variations among engines, putting a higher-octane gas into your car than it requires will neither help nor hurt your car's performance. There are some engines that are not designed to burn higher-octane fuel and you may see a reduction in power and fuel economy.

What happens if you switch gas grades?

Can I use regular gas if my car requires premium? Experts advised against switching to regular gas if a vehicle requires premium. If a vehicle requires high-octane gas but is filled with lower-octane gas, drivers risk damaging the powertrain, which includes the engine, transmission and other components, MacDonald said.

Will mixing new gas with old gas help?

Old and new gas should not be mixed for a variety of reasons, the major ones are; The old gas degrades over time it should not be added because it has already lost it's combustibility. It can cause sputtering. It might fail to fire it up.

What cars take 89 gas?

virtually none. 89 Octane is essentially just a blend of “regular (87) and Premium (91 or 93 depending on state).

Will 89 octane give better gas mileage?

So is Higher Octane Fuel More Efficient? In a word, no. On its own paying for premium gasoline does not make your car run better or get greater gas mileage. Giving your car the fuel it requires to run smoothly and efficiently, without damage to the engine, does make a difference in your fuel mileage.

Can I put Coca Cola in my gas tank?

Experts agree putting Coca-Cola in a gas tank can ruin your car. Copyright 2022 Scripps Media, Inc.

What causes gas mileage to get worse?

Many of the main causes for poor gas mileage are mechanical and include things like improper air flow, faulty injectors or bad oxygen sensors. "Your vehicle needs both fuel and air to give the best fuel mileage," says Nicole Miskelley, manager at PMR Auto & Diesel Repair in Marion, Illinois.

Does sea foam improve gas mileage?

When it comes to fuel economy, Sea Foam cleans harmful fuel residues and deposits that cause dirty or clogged fuel injectors, helping restore injector spray patterns and recover lost mileage. It's safe and effective in any gasoline or diesel engine.

Why do luxury cars use premium gas?

Most luxury car makers require (or recommend) premium gas not because they're trying to be difficult but due to the requirements of high performance engines. The car makers maintain that engines that contain a high compression ration benefit from high-octane fuel.

What cars need midgrade gas?

For example, some sport-utility vehicles (SUVs) require mid-grade gasoline. The higher octane level can be good for performance. Premium gas (often 91 to 94) is often the highest octane gas sold. A car rarely needs premium gasoline, but some vehicles designed for high performance may require a higher octane level.