Why do gas stations not have 91 octane?

I believe that 91 is a blend and since the consumer doesn’t demand 91 the service station doesn’t handle it, there is another reason that is that the service station has a limited number of tanks so he doesn’t have every combination of gasoline’s. The different between 91 and 93 is very small, so you could use 93.

Is 91 octane and 93 the same?

Premium gas is usually considered to be any gasoline that has an octane level of 91 or higher. You’ll usually see these listed on pumps as 91 or 93. Sometimes, 93 octane will be listed as “super-premium” or “ultra.” Unleaded gasoline is usually considered to be “regular” when it is 87 octane.

What happens if you put 93 instead of 91?

Diesel Vehicles Diesel fuel is very different than unleaded fuel, and it’s important that you pay attention to which your vehicle requires. If your vehicle requires diesel fuel and you accidentally put in unleaded, the unleaded fuel will actually remove the lubrication that diesel provides for the car’s parts.

Why does some states only have 91 octane?

Vehicle emissions are basically unchanged with varying octane as long as it’s above the minimum recommended, and the method used to raise octane isn’t in itself damaging such as tetraethyl lead. This is why 91 is common all over the west – the refineries are in California.

Which gas station has the highest octane?

Ultra 94 is the highest octane fuel available at the pump at Sunoco. With 94 octane, it delivers the highest octane rating of any retail fuel on the mass market in the U.S., combined with Top Tier detergency to help make your engine run cleaner, longer, and more efficiently.

Whats the difference between 93 and 91?

Regular gas is rated at 87 octane in most states, while premium gas is often rated higher at 91 or 93. Fuel with a higher octane rating can stand up to higher compression before it detonates. Essentially, the higher the octane rating, the lower the likelihood that detonation happens at the wrong time.

How much better is 93 octane than 91?

Originally Answered: How much of a difference is there between 91 octane and 93 octane gas? With stock engine tuning, probably not noticeable at all since manufacturers will likely tune to 91 octane. When tuning, about 1-2\% more horsepower with 93 octane.

Is premium gas 91 octane?

Premium gasoline is generally considered any type of gasoline with an octane level of 91 or greater, with 91 octane and 93 octane being the most common versions of premium gasoline available at gas stations in the United States (93 octane gasoline may be called “ultra” or “super-premium” in some cases).

Why do some places not have 93 octane?

Supposedly, CARB was concerned about the emissions at the refineries, so they coordinated all of the oil companies to stop offering >91 octane together (so that no one oil company would use 92, 93, etc. as a marketing advantage to gullible consumers and therefore dissuade other oil companies from going to at most 91).

Should I use 87 octane or 91 octane gas?

If it suggests using 87 octane or 91 octane gas, then you should follow it. Using a lower octane rating creates problems with the engine. Using a higher octane rating, while it may not cause adverse effects to the engine, means that you are spending more for no reason. Summary:

What is the octane rating of unleaded gas in USA?

In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88–90 (midgrade), and 91–94 (premium). Gasoline with an octane rating of 85 is available in some high-elevation areas of the U.S. (more about that below ).

What is the meaning of 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). Gasoline with an octane rating of 85 is available in some

What is 91 octane RON?

There are three methods of measuring octane: RON (used mostly in Europe), MON (formerly used in North America) or AKI (an average of RON and MON, currently used in North America). 91 octane RON is about the same as 87 octane AKI. Also, your car may accept a lower octane fuel, but its use may result in reduced horsepower and/or fuel economy.