Can I use different of grades of gasoline when refueling my mini cooper? - MINI Cooper Forum
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Old Mar 17th, 2014, 12:14 AM
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Can I use different of grades of gasoline when refueling my mini cooper?

Hi everyone,

I am in CA, U.S. I just purchased a 2013 Mini Cooper Hardtop.
I am a new driver so I know little about cars ...
The dealer told me that I should add AKI 89. I looked up the manual and it says that AKI 89 is the minimum while AKI 91 is recommended.

I heard that if I use higher grade gasoline, my Mini would perform better. If this is true, I would like to switch to 91 in the future.
Someone told me that if I want to add 91 while there is still 89 in the tank, I need to get rid of the 89 first ... Is it true? Can't they both be in the same tank?

Thank you!
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Old Mar 17th, 2014, 07:53 AM
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The higher the octane the better for a petrol MINI
If you have low octane in the tank now, just fill up with the higher premium grade then keep using that, no need to run the lower stuff right out first.
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Old Mar 17th, 2014, 10:56 AM
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I think the answer depends on which model of Cooper you have. A Cooper S will respond to better petrol/gas, whereas in a plain Cooper it's hard to tell any difference.

One thing to watch out for is that this is a mainly British forum and British octane/AKI numbers are different from US ones - so someone may come along and say you need 99 octane but that would only be 95AKI!

I wonder if the advice not to mix the fuels was so that you could tell if they perform differently - if you mix the grades, the change may be too subtle to notice.
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Old Mar 17th, 2014, 02:46 PM
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Post 89 Octaine........

The wife and I used 89 the whole 58'000 miles we had our 09 HardTop non turbo. You do hear some knocking once in a while but the manual said 89would not hurt anything in the engine. Never had one ounce of trouble....

We have ordered a 2014 Countryman S All-4 from Mini. We will use 91, 92 octane in that, the Turbo really needs it.

If you just take a look at fuel prices next time you go to fill up just take the gallons your car took and times it by the higher octane price, it is only a couple dollars more.

IE...... 10 gal X 3.35 a gallon = $33.50
(here for 92 it's $3.52)

10 gal X 3.53 a gallon = $35.20

Happy Motorin, Mini's are awesome............
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Old Mar 17th, 2014, 05:42 PM
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Great thanks to all of you
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Old May 20th, 2014, 06:00 AM
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Yeah everyone gave us a value able information about the gasoline.Higher the octane number higher the life of a car.So i would like to use every time high octane number gasoline on my Mini Cooper.Nice suggestion i got from this thread.
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Old May 24th, 2014, 11:12 PM
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I agree, give it the 91 it deserves. Treat it well and it will reward you back. In the end, it's only a couple of bucks per tank. Peace of mind = priceless.
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Old Jun 18th, 2014, 10:01 PM
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Fuel octane & turbo charger.



Fuel octane and turbochargers, one does not influence the other, that is misinformation.
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Old Jul 7th, 2014, 11:41 AM
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Canada Fuel Type in Canada

Hi there,

*I want to know which type of fuel should I use for my 2009 Mini Cooper?
*I want to know which brand should I use for my 2009 Mini Cooper?
(ie: Shell, Esso, PetroCanada)

It's been a month since I've stopped using Regular 87 at PetroCanada, & I have been running my Cooper on "Ultra 94" from PetroCanada (so far 2-3 refuelling times)

I just want to keep my car healthy & well fed

I appreciate your advice and feedback.

Thank you very much
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Old Jul 7th, 2014, 04:42 PM
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The important question is whether you have a Cooper or a Cooper S, as it seems to be only the S model that benefits from better fuel.

As you are in Canada, I believe you use AKI fuel ratings, not the RON ratings we use in Britain. So before any Brit says 'Ultra 94' doesn't sound very good, it has a RON rating of 101.5. Dammit, that's nearly rocket fuel and a far higher grade than any that can be bought here.
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Old Jul 7th, 2014, 08:49 PM
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Canada @Angib

Standard Mini Cooper Hatch 2009 R56 - to answer your question.
I just want to keep my Mini Cooper well fed and healthy

You are correct we use AKI fuel ratings. "Ultra 94" from PetroCanada; I couldn't add the weblink so I copy and pasted the features of Ultra 94 below:
__________________________________________________ _________________________________________________
Ultra 94, the High Octane Advantage

Ultra 94's high octane formula surpasses the CGSB (Canadian General Standards Board) performance requirements for super premium gasoline.

What does this mean for your vehicle? Ultra 94's unique performance and higher detergency helps to:

Clean your car's fuel injectors and intake valves — and keep them clean
Optimize fuel economy
Reduce emissions
Improve overall vehicle performance year-round
Ultra 94's higher octane helps ensure you get maximum horsepower, acceleration and performance from your vehicle, even under tough
driving conditions.
__________________________________________________ _________________________________________________

Gasoline
Petro-Canada™ produces and sells high quality gasolines designed to meet every type of Canadian driving condition.
Petro-Canada offers three grades of gasoline across Canada, and a fourth grade in selected areas:

Grade

Octane Level

Petro-Canada Brand Name

Regular

87 octane

RegularClean

Mid-grade

89 octane

PlusClean

Premium

91 octane

SuperClean™

Super premium

94 octane

SuperClean 94, available in Montréal

Super premium

94 octane

Ultra 94™





All Petro-Canada branded gasolines contain Tactrol™, a proprietary deposit control additive, sometimes called a gasoline detergent, that is designed to keep fuel systems clean.

Petro-Canada has supplied Canadians with high-quality fuels that meet their driving needs for many years. This track record, and the fact that our fuels meet or exceed all Canadian standards, has resulted in our customers’ confidence in the quality of our fuels. To confirm the high standards of our fuels, Petro-Canada decided to participate in the Top Tier program as of Oct. 1, 2006.

Find out how Petro-Canada uses ethanol-blended gasoline in selected markets

Tactrol
Because A Cleaner Engine Simply Runs Better

Tactrol is our exclusive deposit control additive that acts as a detergent to clean and prevent the build-up of harmful deposits. Tactrol is used in all grades of Petro-Canada gasoline — including RegularClean, PlusClean, SuperClean, Ultra 94, and WinterGas™.

SuperClean and Ultra 94 come fortified with an extra dosage of Tactrol — so it can actually remove stubborn deposits, help restore your engine's performance, and keep it clean.

No other company uses Tactrol except Petro-Canada.
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