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Petron Avgas 100LL

Avgas is used in small piston engine powered aircraft within the General Aviation community. Predominately activities such as private pilots, flight training, flying clubs and crop spraying. Piston engines operate using the same basic principles as spark ignition engines of cars, but they have a much higher performance requirement.

In today's General Aviation community there are only two main Avgas grades (100 and 100LL low lead) - a rationalisation that has enabled fuel companies to continue supplying a market that would otherwise have become uneconomic. Worldwide, total Avgas volumes are low, since Avgas-fuelled aircraft, although they outnumber jet-fuelled aircraft, are generally much smaller.

This grade is the low lead version of Avgas 100. Low lead is a relative term. There is still up to 0.56 g/litre of lead in Avgas 100LL. This grade is listed in the same specifications as Avgas 100, namely ASTM D 910 and UK DEF STAN 91-90.

Avgas 100LL is dyed blue.

Colour	-	blue
Motor Octane Number	-	min 99.5
Performance Number	-	min 130
Distillation
Initial boiling point	°C	report
10% vol. evaporated at	°C	max 75
40% vol. evaporated at	°C	min 75
50% vol. evaporated at	°C	max 105
90% vol. evaporated at	°C	max 135
Final boiling point	°C	max 170
Residue	%vol.	max 1.5
Loss	%vol.	max 1.5
Sum of temperatures at 10 and 50 VPE	°C	min 135
Sulfur total, (m/m)	ppm	max 500
Lead content	gPb/l	max 0.56 l
Density at 15°C	kg/m3	report
Net heat of combustion	MJ/kg	min 43.5
Freezing point	°C	max (-60)
Corrosion copper strip 2h at t=100°C	rating	max 1
Existent gum	mg/100ml	max 3
Water reaction
Interface rating	ml	max 2
Volume changing	ml	max 2
Conductivity at 20°C	pS/m	od 50 do 600
Vapour pressure, 37.8°C	kPa	od 38 do 49
Oxidation stability at t= 100 °C, 16 h
Potential gum	mg/100ml	max 6
Precipitate, mg/100ml	mg/100ml	max 2