Can I use 91 octane instead 93?

“Use premium unleaded gasoline with a posted octane rating of 91 or higher. If the octane rating is less than 91, you could damage the engine and may void your vehicle warranty. Some manufacturers recommend premium gas but say that regular or mid-grade gas can be used instead.

What is 85 octane gas used for?

Gasoline with an 85 octane rating was previously used for carbureted vehicles in high-elevation areas, but you should not use it in your modern vehicles, as it is not designed to do so.

Is 91 Aki the same as 91 octane?

87 AKI = 91 RON. 91 AKI = 93 RON.

What happens if you put 91 octane in a 93 octane car?

If you usually fill your tank up with 87-octane gasoline and you accidentally put in a higher octane blend (say, 91, 92, or 93), don’t worry. You’re actually filling your car or truck with a different blend of gas, which means it will burn differently in your engine.

Can you run 87 octane on a 93 octane tune?

Can I use the 93 Octane Tune on my SCT Tuner if I use 87 Octane gas? No, this can potentially cause harm to your engine.

What octane is V power?

New Shell V-Power unleaded is a 99RON octane fuel. By comparison, regular Shell unleaded is 95RON.

Is 98 RON fuel worth it?

According to NRMA motoring expert Jack Haley, on average 95 RON can give around 4 per cent lower fuel consumption than 91, assuming the engine computer adjusts to take advantage of the octane difference. Using 98 might give 3 per cent reduction over 95, again assuming the computer adjusts the engine parameters.

Which is the correct octane rating for gasoline?

Selecting the Right Octane Fuel. What is octane rating? Octane rating is the measure of a fuel’s ability to resist “knocking” or “pinging” during combustion, caused by the air/fuel mixture detonating prematurely in the engine. In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88–90 (midgrade), and 91–94 (premium).

How does the octane level affect my vehicle?

The extremely unstable normal heptane (C7H16) molecule is the 0 octane reference fuel. How does the octane level affect my vehicle? Engines are designed to burn fuel in a controlled combustion. A flame starts at the spark plug and burns throughout the cylinder until all of the fuel in the cylinder is burned.

What should be the octane of pure ethanol?

Alcohol and Octane. Best estimates of the actual octane rating of pure ethanol place it at about 100 octane. This is probably a conservative value but it is one we are comfortable with. If you see octane claims for ethanol in the 112 range, be suspicious that the octane number might be incorrectly based on BOV.

Why was the sale of 85 octane fuel allowed?

The sale of 85 octane fuel was originally allowed in high-elevation regions—where the barometric pressure is lower —because it was cheaper and because most carbureted engines tolerated it fairly well. This is not true for modern gasoline engines.