High Octane Unleaded?

PixelChef

PixelChef

PixelChef

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Joined
8 Oct 2007
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Well at the petrol station yesterday I managed to accidentally buy "High Octane Unleaded" instead of 'normal' unleaded. There was a choice between Premium Unleaded or High Octane Unleaded. I wanted the normal one, premium sounded like the 'special' one to me. Obviously I was wrong.

Anyway thing is my car already had some 'normal' unleaded in the tank so it's now mixed with the High Octane one. Should I be worried? Is my car going to explode?
 
It will be fine

In theory, it will clean your engine a bit too.

You can mix them with no ill effects
 
There is no such thing as normal unleaded in the UK, premium is the lowest grade sold and What most consider as normal.

You have filled up with super unleaded from what sounds like a Texaco garage.
 
MikeHiow said:
Premium is just a name, it is normal unleaded.
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Premium is not just a name, and it's not normal unleaded.

'Normal' unleaded is 91RON. Premium Unleaded is 95RON. In most countries (Germany, Australia etc) unleaded is offered in three flavours - Normal (91), Premium (95) and Super (97+).

However in this country, 91 is not offered. Therefore all unleaded is either Premium or above. It is factually incorrect to state it is 'just' a name - it's a specific name for a specific grade of fuel.

What most people consider as normal unleaded is Premium unleaded. Which is why it says 'Premium Unleaded' on the pump.
 
Why isn't normal offered in the UK? Surely if it's offered in Germany and they have pretty much the same cars we do on the road then it should be okay?
 
[TW]Fox;17459297 said:
Premium is not just a name, and it's not normal unleaded.

'Normal' unleaded is 91RON. Premium Unleaded is 95RON. In most countries (Germany, Australia etc) unleaded is offered in three flavours - Normal (91), Premium (95) and Super (97+).

However in this country, 91 is not offered. Therefore all unleaded is either Premium or above. It is factually incorrect to state it is 'just' a name - it's a specific name for a specific grade of fuel.

What most people consider as normal unleaded is Premium unleaded. Which is why it says 'Premium Unleaded' on the pump.
Click to expand...

So one could argue that for this country, Premium unleaded is normal :p

But yeah....you're right :D
 
BigglesPiP said:
Is "premium" mentioned in BS EN 228 (the standard for our 95 RON unleaded), or is it just a branding choice?
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i think its like the difference between mcdonalds calling small, regular and large. theyll call it what they want.

95 is the lowest well get here so thats "normal" imo
 
You will find premium written on the pump, not regular or normal. This is because its premium grade unleaded.

Why is this so hard to grasp?
 
I always run my 328i on the high octane stuff, where its available, perhaps a waste of money on a 14year old car, but I swear it runs better with it.....
 
[TW]Fox;17460275 said:
97 i think. It's just super.
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See that's the problem. Tesco Super is 99, but SUL can be 97 or 98, too.

There is no governing body to set standards for different grades (normal, premium or super) - it is just a name. The only standards are for a minimum fuel quality/specifications and that makes no mention of premium.
 
Tesco super is 97. It's 99 is Momentum 99 and not all sites carry it. Those that don't have 97 Ron super instead.

This is all very easy to understand.
 
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