Avgas Specifications

US Military and Commercial Specifications

Color

80 Octane

82 U/L

100/130

100 LL

Red

Purple

Green

Blue

Composition

Sulfur (wt %) max.

0.1

0.1

0.1

0.1

Aromatics (vol %) min

5.0

5.0

Volatility

Dist 10% min

135.0

126.0

135.0

135.0

Dist 40% min

135.0

135.0

135.0

Dist 50% min

189.0

119-218

189.0

189.0

Dist 90% min

243.0

342.0

243.0

243.0

End Point max

306.0

405.0

306.0

306.0

Sum of 10% & 50%

135.0

135.0

135.0

Residue (vol %)

1.5

2.0

1.5

1.5

Dist loss (vol %)

1.5

3.0

1.5

1.5

Gravity API

Report

Report

Report

Reid Vapor Pressure

5.5-7.0

5.5-9.0

5.5-7.0

5.5-7.0

Fluidity

Freeze Point

(-60C)

(-58C)

(-58C)

(-58C)

Combustion

Net Heat of Comb MJ/kg

43.5

40.8

43.5

43.5

Aniline-Gravity Product

7500.0

7500.0

7500.0

Octane Rating, Lean

80.0

100.0

100.0

Octane Rating, Rich

87.0

130.0

130.0

Corrosion

Copper Strip

Report

Report

Report

Stability

Potential Gum max

6.0

6.0

6.0

6.0

Precipitate max

2.0

2.0

2.0

Contaminants

Existent Gum max

3.0

3.0

3.0

Water Reaction Interference Rating max

2.0

2.0

2.0

Water Reaction Volume Change

2.0

2.0

2.0

Additives

TEL g/liter max

0.14

1.12

0.56

Fuel

Type

Color

Octane

Rating

Use

Remarks

Lean

Rich

80/87

Red

80

87

Low compression engines

No longer available in the USA

82 U/L

Purple

82

89

Low compression engines

U/L Auto Fuel for aviation use. Planned to replace 80/87 in USA

91/96 U/L

?

91

96

most non-turbo engines up to 180-200 HP

Available in Sweden. Essentially 100LL without lead

100/130

Green

100

130

higher compression piston engines.

limited availability. Low compression types may experience heavy lead fouling

100LL

Blue

103

131

all piston engines

Standard Low Lead Avgas

115/145

Purple

115

145

Early MIL Spec Avgas

Limited civil use. Only made on special order.

Research

Motor

Auto Fuel

Regular U/L

undyed

91- 93

82-83

SUL

undyed

96-98

87-89