By another decision of the Cabinet of Ministers, excise tax rate for the import of gasoline with an octane rating of 92 (AI-92) or higher including less than 95, has been reduced from 200 manats per ton to one manat.

Comparing alkylate and Euro-4 quality gasoline, Euro-4 and premium gas have octane ratings of 91 and 95 respectively.

This is 20 points higher than the average octane rating found in regular motor gasoline.

Until now, India has hadan octane rate of 97, offered by BPCL, and Shell's octane rating is a tad less."

Gasoline blends must meet standards for octane rating, volatility, sulphur, aromatics content and viscosity.

Octane rating is the standard measure of performance of a fuel.

PSOs e-10 gasoline, a blend of ethanol and gasoline results in less carbon-mono-oxide emissions from the vehicle and with its high octane rating helps vehicles engine to perform better.

Methanol has a higher octane rating and the way it's made can help cut global warming.

In the EU, compared to figures for July 4 (see Europe Information Energy 672, section II), the average pre-tax price of euro premium unleaded (95 octane rating) rose from euro 432.69 to euro 474.94/1,000 litres.

is likely to shrink the nation's gasoline supplies next spring," reported the Wall Street Journal on August 2, "and could boost prices eight cents a gallon or more." Larry Goldstein, president of the Petroleum Industry Research Foundation, told the Journal that MTBE has been the cheapest and most popular additive in part, "because it has a high octane rating and allows refiners to use lower-octane gasoline components for blending.

However, ethanol has a good octane rating of around 112 and a high heat-off evaporation so it cools down the intake charge.

Two 4.5 HP lawnmower engines were monitored over time as regular gasoline (octane rating = 87) or E85 ethanol was burned in them.

Normal unleaded petrol has 95 octane rating and premium petrols such as Shell Optimax and BP Ultimate have ratings of 98 and 97.