Can you mix E10 gasoline with 95 and 98 gasoline?

The new, greener fuel is now available at petrol pump shops nationwide – but some drivers are still baffled.

So if you are confused about E10 and mix everything at the filler, we’ve got you covered.

E10 fuel will be rolled out across the UK from September 2021


E10 fuel will be rolled out across the UK from September 2021Credit: AFP – Getty

Can you mix E10 with 95 or 98 fuel?

Unleaded E5 petrol has had a makeover in the UK and becomes E10 in September.

New formulation contains up to 10% renewable ethanol to help process climate change and is considered a greener option.

Stations that offer two types of gasoline will stock E10 (95 octane) and E5 (97+ octane).

Thankfully, about 95 percent of gasoline-powered vehicles on the road are compatible with E10 gasoline – and this number is growing continuously, according to the government.

However, if your vehicle does not run on the new E10 fuel, you can continue to use E5 gasoline in the “super” grade.

If your vehicles compatible with gasoline E10, there’s no reason you can’t combine two classes – E5 97+ and E10 95+.

It is completely safe to combine them in the same tank or fill up with E5 without E10 and it will not cause any damage to your car.

If you’re running out of E10 and you find a station that’s not stocked, it’s okay to fill up with old E5 95 gas.

What happens if you mix 98 and 95?

Mixing premium unleaded (95) and super unleaded (97/98) well in your tank will give you a blend of about 96 octane gasoline.

While this is unlikely to cause major damage to your car, the RAC recommends sticking to the recommended octane rating for your vehicle.

This will ensure efficient operation and avoid engine damage.

An AA spokesman said: “Mixing 95 and 98 octane fuels should not cause any problems.”

What is the best fuel for my car?

When it comes to what fuel is best for your vehicle, it’s best to check the owner’s manual.

Some vehicles will run optimally on standard premium unleaded fuel, while others will run more efficiently on higher octane fuel such as super unleaded.

According to the RAC, as a general rule, drivers can fill up with higher than recommended octane fuel, but should avoid using lower fuels.

While a higher octane tank may not have an advantage or even make a clear difference, a lower choice could cause damage to your engine.

Premium unleaded is the most common and cheapest fuel used in most gasoline vehicles.

This is replaced with E10 for 95% of drivers in September.

Super unleaded is best for high-performance vehicles and is widely available, while premium fuel is the best high-octane gasoline.

Manufacturers of premium fuels claim they offer “improved lubricity, cleaning action and higher performance”.

Ten things you should know as a car owner

Department of Transportation reveals four things you need to know about new E10 fuel Can you mix E10 gasoline with 95 and 98 gasoline?

Caroline Bleakley

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