A higher octane rating The formulation of Shell V-Power with a minimum Research Octane Number of 98 was designed to offer even better engine performance and protection. it is formulated to remove existing deposits and improve engine response. Used regularly, Shell V-Power Racing can help keep a new car performing like new for longer and can The selection of octane ratings available at the pump can vary greatly from region to region. Replaced with "regular" unleaded fuel Ron 95 RON, "premium" fuel is rated at 97 RON(but for Shell 97 RON is V-Power 97, and Shell's V-Power Racing is rated at min 97 RON.) México: Pemex Magna (87 AKI) is sold as a "regular" fuel and is available Results from the tests showed that two out of three drivers experienced more power, responsiveness and efficiency in their cars compared to their regular RON 97 fuel. But for around town 87 or 93 now. The Camy will get the same higher octane. Every week put in $10 worth of high octane. Since it doesn't see a lot of miles each week. Sure beats filling it up completely with 93 octane. Kind of budgeting thing with the high octane and makes the added cost much more palatable. S. So for example, if the matching benchmark mixture is 90 per cent iso-octane, the test fuel will be rated as 90 RON. The higher the octane rating, the greater the fuel's ability to resist knock Octane has many structural isomers that differ by the amount and location of branching in the carbon chain. One of these isomers, 2,2,4-trimethylpentane (isooctane) is used as one of the standard values in the octane rating scale. Octane is a component of gasoline (petrol). V power is a fuel detergent added into there products. Have gone with a few different brands of 98 (shell v power 98 too) but no diff as far as butt dyno is concerned. Cant say much for current ride as still very new but previous experience with 95 vs 97/98 shows smoother engine across all rpm range. In my 2010 scirocco previously, fuel injectors were chocked at 18000km mileage as was using cheaper The 87-octane fuel maintained more power than the 89-octane fuel. The dyno sheet for the 91-octane fuel showed horsepower and torque figures within one point of those measured on the 89-octane fuel. However, it showed a much higher decrease when the engine returned to its normal operating temperature, and as it got hotter on the dyno, showed an Octane ratings provide a specific rating of how well the fuel resists compression (ignition) and its important for the smooth running of gasoline vehicles. Then used shell v power diesel and run additional cleaners and fuel lubricants through the system. Always add 25ml of a cetane booster to every tank of fuel now. Results after 18 months 0.773 - 0.793. 7.65%. Unleaded racing fuel is specifically engineered for normally aspirated and turbo - super charged engines. Compression Ratios from 13:1 to 15:1. It is formulated with power enhancing oxygenates. Suitable for engines developing up to 700-1000 horse power. rJ2Zu.