ASGAS 100LL

ASGAS 100LL: An Introduction

ASGAS 100LL is a type of aviation fuel commonly used in piston-engine aircraft. The fuel is a combination of 100 octane low-lead (LL) gasoline and a small amount of tetraethyl lead. This blend provides excellent performance for high-performance aircraft while also reducing the risk of engine damage.

Availability of ASGAS 100LL in Different Sizes

ASGAS 100LL is available in two sizes: 200-liter metal drums and 24,000-liter ISO tanks. The metal drums are convenient for smaller operations or those with limited storage space, while the ISO tanks are suitable for larger airports and aircraft fleets.

Handling and Storage of ASGAS 100LL: Importance and Procedures

It is essential to handle ASGAS 100LL with care and follow proper storage and handling procedures to ensure its quality and safety. Additionally, it is crucial to use the correct type of fuel for each aircraft to prevent engine damage or failure.

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SAMPLE ID: TK 2073-T-0018

Sample Date: 06.03.2023

Report Date: 07.03.2023

Test Category Test-A

Sample Source: TK 2073-T-001B (Tank UML Composite)

Report No: AVGAS 100LL/12/2023

Batch No: AVGAS 100LL/IOC/RK/2073T001B/002

Sample Collected by: JR QC

Reason for Testing: Certification as per DEF STAN 91-080 issue 5, 14 December 2019

DEF STAN 91-080 issue 5, 14 December 2019 Table 1- Test Requirements

Test	Property	uom	Limits Grade 100LL	Test Methods	JR-QC Results
1	Appearance	–	Clear, bight and visually free from solid mater and undissolved water at ambient temperature	Visual	Clear, bight and visually free from solid matter and undissolved water at ambient temperature
2	Colour, visual (see NOTE 1)		Blue	Visual	Blue
3	Corrosion Copper Strip		Max 1	ASTM D130	1a
4	Density at 15°C	kg/m3	Report	ASTM D4052	693.6
5	Total Sulphur, Max	% m/m	Max 0.05	ASTM D5453	0.0003
6	Existent Gum	mg/100 ml	Max 30	ASTM D381	<1
7	Freezing Point	ºC	Max minus 58	ASTM D2386 (see NOTE 2)	<-58
8	Specific Energy	MJ/kg	Min 43.5	ASTM D3338	44.4
9	Reid Vapour Pressure at 37.8°C*	kPa	Min 38.0 Max 49.0	ATSM D5191	45.2
10	Knock Rating
10.1	Lean Mixture Motor Method Octane		Min 99.6	ASTM D2700 (see NOTE 3)	101.8
10.3	Performance Number**		Min 130.0	ASTM D909 (see NOTE 3)	135.2
11	Distillation			ASTM D86 Group 2
11.1	Initial Boding Point	ºC	Report		37
11.2	Temperature at % fuel evaporated
11.2.1	10 vol %	ºC	Max 75		63
11.2.2	40 vol %	ºC	Min 75		97
11.2.3	50 vol %	ºC	Max 105		103
11.2.4	90 vol %	ºC	Max 135		113
11.3	Final Boiling Point	ºC	Max 170		142
11.4	Sum of 10% and 50% Evaporated Temperatures	ºC	Min 135		166
11.5	Residue	% v/v	Max 1.5		1.2
11.6	Loss	% v/v	Max 1.5		1
12	Oxidation Stability, 16 hours			ASTM D873
12.1	Potential Gum	mg/100mi	Max 6		1
12.2	Precipitate	mg/100mi	Max 2		0.00
13	Tetraethyl Lead Content	gPb/l	Min 0.28-Max 0.56	ASTM D5059 (See NOTE 6)	0.54
14	Water Reaction
14.1	Volume Change	ml	Max 2	ASTM D1094	0.0
15	Electrical Conductivity***	pS/m	50-600	ASTM D2624 (See NOTE 7)	15
16	Colour, Lovibond			IP 17 (see NOTE 8)
16.1	Blue		Min 1.7-Max 3.5		2.9

DEF STAN 91-090 Issue 5 Notes

NOTE 1: The visual colour must also comply with test 16 of this table.

Note 2: If no crystals appear when the thermometer indicates a temperature of – 58ºC, the freezing point shall be recorded as below -58ºC.

Note 3: Knock rating shall be reported to the nearest 0.1 for Octane Number and Performance Number.

Note 6: For Grade UL91 ASTM D3237 is applicable For Grades 100LL and 100/130 IP270 is applicable.

Note 7: When a Static Dissipator Additive has been added to the fuel the conductivity at the point, time and temperature of delivery to the purchaser shall be in the range 50 10 600 pS/m.

Note 8: IP 17 has been replaced by IP 569, A50.8mm cell shall be used, IP 17 is allowed as an alternative method, see Table 3.