These numbers - 91, 95 and 98 - refer to a petrol's octane rating, or RON, which is essentially a grading of the fuel and its combustion efficiency. A way of remembering this is like the Olympics - 91 is bronze, 95 is silver and 98 is gold. Generally, the higher the number the better the fuel. But because manufacturers optimise their engine

The No.98 features the Shell pecten from naming rights partners Viva Energy Australia (Shell Licensee), with the racing number paying homage to Shell's 98 octane premium unleaded fuel, Shell V-Power Unleaded 98. The pecten will feature alongside Harvey Norman, Rheem, Pivotel, WM Waste and National Tiles. So their 89 octane is two parts 87 and one part 93 octane so you'd obviously get some of the 93 benefits, Exxon went the route of making their 93 octane "special" to compete with Shells V-Power. 87 octane is Top TIer but does not have all the chemical "bells and whistles" of the 93 octane.

In Australia, the previously obtainable higher grade V-Power Racing which contained 5% ethanol to boost V-Power's octane rating to 100 RON has now been phased out by Shell due to a "changing market". At around 2004 , all United States Shell gas "Premium" was rebranded as "V-Power".

Techron, an ingredient that enhances acceleration, increases mileage, reduces pollutants, and shields engine components from carbon buildup, is used in all Chevron gasoline. For comparison's sake, here are the Shell fuel grades and Octane ratings: Regular Shell: 85. Shell Plus: 88. Shell V-Power Nitro+ Premium: 91.

^{This video is a user review on Shell V power after doing 1000+km with this premium petrol. Th Do premium fuels like Shell V Power really make any difference? This video is a user review on}

With 94 octane, it delivers the highest octane rating sold at gas stations for purchase at the pump in the U.S., combined with Top Tier detergency to help make your engine run cleaner, longer, and more efficiently. Sunoco 94 Octane helps vehicles run longer without performance issues such as reduced engine power, rough idle, and stumble Shell V-Power Unleaded instantly forms a protective layer in critical parts of your engine, helping it to run smoothly and efficiently. 1. Shell V-Power Unleaded is Shell's premium fuel that contains proprietary DYNAFLEX Technology that cleans and protects your engine. Shell V-Power Unleaded formulation is boosted and now contains 3 times

Shell V-Power + the 5-10 pence a litre more again. If you think the Royal Dutch Shell product is better maybe stick with it. Gulf and others Super Unleaded in the UK are 97 octane minimum. Tesco Momentum 99, Shell V-power Nitro+ and Costco Super Unleaded in the UK are 99 octane minimum. The 'Super Unleaded' covering different octanes is odd

^{The octane rating of gasoline is measured in a test engine and is defined by comparison with the mixture of 2,2,4-trimethylpentane (iso-octane) Shell "V-Power Racing" in Australia - discontinued July 2008. 88 87. 100 100 101 102[16] 102 103. 100. 100. 97.6 9394 91. 9798 97} ^{The previously obtainable higher grade V-Power Racing which contained 5% ethanol to boost V-Power's octane rating to 100 RON has now been phased out by Shell due to a "changing market". In the United States (U.S.), at around 2004, all U.S. Shell gas "Premium" was rebranded as "V-Power".} ^{AFAIK, Shell 93 V-Power does not contain any ethanol. This is better for fuel economy but not necessarily the best for performance. Sunoco Ultra 94 (now under Petro Canada here) has ethanol that helps achieve the higher octane rating. I will help clean up timing corrections and is the only gas I fill up with.}

New and Improved Shell V-Power Nitro+. Our best-ever higher-octane performance fuel with EURO 4 standard. The New and Improved Shell V-Power Nitro+ removes 100% of deposits to fully rejuvenate your engine's performance. It also offers unbeatable potection against corrosion. Use Shell V-Power Nitro+ for more power and quicker acceleration.

On June 1, 2012 Shell will launch its latest generation of premium performance fuels namely Shell V-Power Nitro+ Gasoline, Shell V-Power Nitro+ Racing and Shell V-Power Nitro + Diesel. The Philippines is one of the first countries in the world to see the introduction of the new premium performance fuels, which will directly replace the Shell V