Quick Answer

Question: What is the 100 in avgas?

Avgas 100LL is a gasoline specially designed for piston engine aircraft. Avgas 100LL is a product blended in refineries which has a blue dye added. “100” is the octane number and “LL” stands for Low Lead content.

Why is avgas 100 octane?

The most common avgas is 100 octane, which is a measure of the fuel’s ability to resist premature detonation or “knock.” Avgas is also available at other octanes such as 87 and 130, but they are rare today. At the pump, you’ll find gas ranging from 87 to 93 octane for automotive use.

What is the octane rating for aviation fuel?

The octane ratings of AVGAS, a gasoline-based fuel, are usually either 91 or 100 (lean mixture) and 96 or 130 (rich mixture). The octane rating of jet fuel is much lower, around 15 – this is much more like automotive diesel and thus much more resistant to detonating due to sparks or compression.

What color is 100 octane avgas?

Each grade of avgas is dyed a different colour to make it easier to identify. For example, Avgas 100 is green and Avgas 100LL is blue.

Is avgas same as jet A1?

Avgas is used for piston-engine aircraft, and Jet A1 (as you may see on tankers at airports) for jet engines.

Is avgas still leaded?

Aviation gasoline (avgas) is the aviation fuel most commonly used in piston-engine aircraft. Avgas remains the only transportation fuel in the United States to contain lead more than 190,000 registered piston-engine aircraft can operate on leaded avgas.

Why is lead added to avgas?

General aviation’s need for a high-octane fuel to power high-compression piston engines required avgas makers to add tetraethyl lead before delivery to prevent damaging engine knock, or detonation, that could result in engine damage.

Does avgas make more power?

Avgas doesn’t contain any ethanol. While ethanol can help gasoline make more power, it can also cause hardware issues in older vehicles. “Can’t pull your plane over on the side of the road if there’s a problem with the fuel system,” Santner notes.

How is avgas different from car gas?

Avgas (aviation gasoline, also known as aviation spirit in the UK) is an aviation fuel used in aircraft with spark-ignited internal combustion engines. Avgas is distinguished from conventional gasoline (petrol) used in motor vehicles, which is termed mogas (motor gasoline) in an aviation context.

What is 100 octane fuel used for?

Its 100 octane rating will allow increased boost levels in supercharged or turbocharged applications compared to premium pump gas. Sunoco SS 100 can be used in high performance vehicles both old and new. It can also be used in applications such as motorcycles, ATVs, karts, and other smaller engine vehicles.

What octane is race fuel?

The gasoline at a gas station ranges from 87 to 93 octane. Racing fuel ranges from 100 to 120 octane. Since racing engines operate with higher compression ratios, they need higher octane racing fuel to operate.

Can I use 100 octane in my car?

Unleaded high-octane racing fuel is fine to add to your car, and you won’t notice much of a difference apart from the exorbitantly higher price. Leaded fuels, methanol fuels and even nitromethane fuels are used exclusively for racing in most cases, unless you have an engine designed to run on methanol.

Can you mix avgas with regular gas?

100LL mixes just fine with pump gas. It really is no different than race gas, has similar smell. My best understanding is a difference in vapor pressure so it does not vapor lock when used in an airplane. Not an issue for an automtive engine.

Why is avgas more expensive than jet fuel?

Jet A fuel costs less than 100LL (avgas) fuel because it is less complicated and expensive to manufacture, less expensive to transport via pipelines, and used in significantly higher quantities leading to economies of scale.

What avgas is red?

Red: AvGas 80 (80/87 Octane)

Why do airliners use jet fuel instead of avgas?

Jet Fuel is easier to obtain, it is reached earlier than AVGAS during the refining process of crude oil. Takes longer to be distilled when being refined. It also requires additional reforming and combining processes. Although it operates huge engines, Jet Fuel price is cheaper because of its simple refining methods.

How much does it cost to fill up a 747 airplane?

Seats to fill

A 747 can seat 380 to 560 people, depending on how an airline sets it up. A full one is a moneymaker. But an airline that can’t fill all the seats has to spread the cost of 63,000 gallons of jet fuel — roughly $200,000 — among fewer passengers.

What fuel do fighter jets use?

Answer 1: Nearly all jet aircraft use a variety of Kerosene (yup heavy diesel…). The reason is that hydrocarbon fuels contain more energy per liter as the molecular weight goes up. (This is why a diesel car can go farther on a gallon of diesel than a gasoline car can).