I thought 100LL was closer to 105MON?
Also I paid $3.90 for avgas, and pump premium was anywhere from 3.10 to 3.70 where we were riding up north.
According to BP's website it is minimum 99.5 MON. Thats where I got my info.
Sunoco 110 is 105MON
Heres some info from conoco phillips. Look down to the octane lean. That is the MON rating.
http://www.experimentalaircraft.info/doc/Avgas-specs.pdf
Additives - AO Antioxidants mg/gal 45.4
Additives - Conductivity Conductivity Improver 842
Additives - Dye Blue Dye mg/gal 10.2 805
Additives - General Note General Note 878
API Gravity (60 Deg F) D 4052 Density & Rel Dens API Report
Appearance D 4176 Wtr & Part Cont, Proc 1 Pass 841
Color, Visual D 2392 Color of Dyed Av Gas Blue
Copper Strip Corrosion D 130 Cu Str 2 Hr @ 212 F Rating 1b
Dist 10 Vol% Evap D 86 Dist at Atm Press Deg F 167
Dist 10%+50% Evap D 86 Dist at Atm Press Deg F 275
Dist 40 Vol% Evap D 86 Dist at Atm Press Deg F 167
Dist 50 Vol% Evap D 86 Dist at Atm Press Deg F 221
Dist 90 Vol% Evap D 86 Dist at Atm Press Deg F 275
Dist End Pt, corr D 86 Dist at Atm Press Deg F 338
Dist IBP, corr D 86 Dist at Atm Press Deg F Report
Dist Loss, corr D 86 Dist at Atm Press Vol% 1.5
Dist Recov, corr D 86 Dist at Atm Press Vol% 97
Dist Residue D 86 Dist at Atm Press Vol% 1.5
Freeze Pt D 2386 Freeze Pt by manual Deg C -58 808
Lead (Pb) D 5059 Lead by X-ray Spec gPb/gal 2.12
Lead as TEL eq D 5059 Lead by X-ray Spec ml TEL/gal 2.00
Net Heat of Combustion D 3338 Net Heat of Comb BTU/lb 18,720 835
Octane, Lean Number D 2700 Knock Charac by Motor 99.5
Octane, Performance No. D 909 Knock by Supercharge 130.0 809
Ox Stab, Lead Precip D 873 Ox Stab, 5 hrs aging mg/100ml 3 851
Ox Stab, Potential Gum D 873 Ox Stab, 5 hrs aging mg/100ml 6 851
Sulfur D 2622 S by X-ray Fluo Spec Wt% 0.05
Vapor Pressure (ASTM D 5191 VP Grabner (ASTM eq) psi 5.5 7.1
Water Rxn Vol Change D 1094 Water Rxn by manual ml + or - 2
Other - See Note Referee Methods 826
Other - See Note Test Tolerances
From Shell
http://www.docstoc.com/docs/7671746/ASTM-D-910-(Grades-Avgas-100-and-Avgas-100LL)
Typical Properties
Property
Max Value
Min Value
Knock Rating, Lean Mixture (Motor Method) Octane Number 99.5
Knock Rating, Rich Mixture (Supercharge Method) Performance Number 130
Freezing Point ºC -58
Distillation end point ºC 170
Reid Vapour Pressure @ 38ºC kPa 49 38
Sulphur content %m 0.05
Tetraethyl lead content gPb/l Avgas 100LL 0.56
Colour Blue
From BP, Though I have found other literature from BP stating that the Motor octane is 99.5 minimum, this is what is shown.
http://www.bp.com/liveassets/bp_int...s_pdfs/a/air_bp_products_handbook_04004_1.pdf
BP AVGAS 100LL
Specifications
British Def Stan 91-90
USA ASTM D910
Typical Properties
Knock rating
Lean mixture, aviation rating 105
Rich mixture, supercharge method 133
Tetraethyl lead, gPb/l 0.52
Colour Blue
Specific energy, net, MJ/kg 43.73
Density at 15ºC, kg/m
3 715
Distillation
Initial boiling point, ºC 41
10% vol. evaporated at ºC 58
40% vol. evaporated at ºC 92
50% vol. evaporated at ºC 101
90% vol. evaporated at ºC 128
Final boiling point, ºC 156
Sum of 10% and 50% evaporated temperatures, ºC 164
Recovery, % vol 98
Residue, % vol 1
Loss, % vol 1
Vapour pressure, kPa 41.6
Freezing point, ºC below -60
Sulphur, % mass 0.0003
Copper strip corrosion (2h at 100ºC) 1
Existent gum, mg/100ml 1
Oxidation stability
Potential gum, mg/100ml 0.5
Lead precipitate, mg/100ml 1.0
Water reaction
Volume change, ml Nil
Interface rating 1
