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shell v power


supra matt

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They mention 99RON, nice.:D

Tesco99 will have some competition now.

 

As we recall, with Optimax they've been beating around the bush, refusing to have any octane figures on the pumps.

They even tore down the official forum where people like me kept asking their 'expert' for a straight answer on RON and MON values (to no avail):innocent:

 

Looks like they're getting their act together at last...

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Supra Fuel Man - The Shell Inside Story

 

So is Shell 95 the same as any other 95?

 

Although the base fuel i.e 95 Octane unleaded that is taken by each company is coming from the same tank (manufactured to the European specification EN228), the additive package that is injected as it is loaded into the road tanker is specific to each retailer. Shell has mega expereince in additive techology and that is what makes a difference to the "standard" fuel

 

Does this apply to Optimax

 

Optimax is unique in that it is desgned to protect the engine and give benefits in acceleration and responsivness. Optimax is ONLY made at Stanlow refinery in Ellesmere Port and distributed through the UK. Optimax is the only widely avaiable fuel in the UK that is made from a specially developed fuel base

 

Why does super unleaded on the Continent have a higher octane rating - sometimes up to 99 or 100 Ron

 

The rating is a bit misleading becasue the octane number is just one factor in what makes a good fuel. Some countries have a very big appetite for octane - the German market , for example , like to have very high octane fuel. The standard OEM is still to map thier engines to 95 or 98: with modern engine management systems you have very sophisticated knock control systems so even if you have a fual that's not 98 but slightly above or slightly below, the engine should be able to deal with it without any problems and maintain performance

 

Why do fuels perform much better in some cars and not others?

 

How an engine responds to a fuel is down to an enormous number of things. For example , whether a car is turbocharged or not, or whether it ha a particularly fast-burning combustion chamber or not can make a lot of difference. The compression ratio itself can also be a big factor on how a fuel behaves, so some engines have a different appetite for fuel than others. Optimax has specially chemicals within it to help enhance the responsviness of the engine . That has nothing to do with Octane but instead has to do with how the car feels when you squeeze the pedal, not how the car feels when your've flat out on a wide open throttle. It's a specific thing and some cars will react differently to others.

 

Racing fuels

 

F1 Fuel has to contain 99 per cent the same type of compounds as the road car fuel. Shell take refinery streams from all over the world and mix them together, with 1 per cent degree of freedom to create race fuel

 

Tesco and BP producing even higher octanes in limited batches (not widely available yet) However remember Octane is one factor in driving your cars ultimate performance.

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V-Power is 100ron in Germany and some parts of Italy & France. It's 98 everywhere else.

 

Optimax is 95ron with additives to boost it to an equivalent of 98ron.

 

 

Sorry, not true - here is some blurb from Shell USA:

 

What is the octane rating of Shell V-Power?

 

Octane ratings for premium gasoline vary across the country. The octane level of Shell V-Power is anywhere from 90 to 93 octane, depending on the region. It’s important to point out, however, that octane is not the only factor to consider when choosing a fuel. For example, many cars that don’t require higher octane can benefit from the cleaning power provided by Shell V-Power.

Shell V- Power premium gasoline actively cleans for better performance. It helps clean up deposits on intake valves and fuel injectors left behind by low-detergent gasolines. That’s because Shell V-Power contains more than five times the amount of cleaning agents required by government standards. If these deposits are not removed, some vehicles may experience hesitation during the initial warm-up period.

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Copy and Pasted from elsewhere:

 

Measurement methods

 

The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel through a specific test engine with a variable compression ratio under controlled conditions, and comparing these results with those for mixtures of isooctane and n-heptane.

 

There is another type of octane rating, called Motor Octane Number (MON) or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load. MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, a higher engine speed, and variable ignition timing to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern gasoline will be about 8 to 10 points lower than the RON. Normally fuel specifications require both a minimum RON and a minimum MON.

 

In most countries (including all of Europe and Australia) the "headline" octane that would be shown on the pump is the RON, but in the United States and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "regular" gasoline in the US and Canada, would be 91-95 (regular) in Europe.

 

 

 

--------------------

 

Add your five point differential to your USA 93Ron = the standard 98ron octane.

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