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A2 Grade Gas Oil Specifications

Gas oil used in modern agriculture, heating and power generation applications must meet BS 2869 A2 grade. This page explains what that means.

Crown Oil

Find Out the BS 2869 A2 Class Gas Oil Specifications

Crown Oil supplies red diesel that meets the BS 2869 Grade A2 specification. This grade of gas oil is a dyed and marked product, to be used for small furnace or boiler applications, stationary diesel and untaxed engines.

We can also supply gas oil that meets Grade D specs, and EN 590 specs too.

For more information about this grade and specification of fuel, read our guide to fuel specifications. For more information about red diesel and its uses, read our Red Diesel FAQs.

View how our A2 Grade gas oil meets the specifications in the table below.

A2 Grade Gas Oil Specification chart

Parameter Unit Minimum Maximum Typical
Appearance Clear & bright, Cherry Red,

Free from visible sediment.

Density at 15°C kg/m³ 0.820 0.860
Kinematic viscosity at 40°C mm²/s 1.5 5.5 3.0
Carbon residue

(Ramsbottom on 10% residue)

% (m/m) 0.30 0.10
Distillation recovery at 250°C % (v/v) 65 42
Distillation recovery at 350C % (v/v) 85 92
Flash point (PMCC) °C 56 >62
Water content mg/kg 200 <100
Particulate content mg/kg 24 <10
Ash content % (m/m) 0.01 <0.01
Sulphur content % (m/m) 0.002 <0.098
Copper corrosion

(3 hrs at 50°C)

Class 1 1a
Cold filter plugging point(1) Summer °C -4 -8
Cold filter plugging point(1) Winter °C -12 -14
Cetane number 45 48
Fatty acid methyl ester (FAME) % (v/v) 7.0 <0.1
Carbon % (m/m) 87
Hydrogen % (m/m) 12.75
Nitrogen % (m/m) 0.01 – 0.05
Gross specific energy (MJ/kg) MJ/kg 45.4
Gross specific energy (MJ/litre) MJ/litre 38.8
Mean specific heat capacity over 0 – 100°C KJ/kg °C 2.05
Volume correction factor per °C 0.00081
Strong acid number mg KOH/g nil nil
Lubricity (HFRR) µm 460 <460
Oxidation stability 0.0 – 7.0% FAME g/m³ 25
Oxidation stability 2.0 – 7.0% FAME h 20

This specification is not a guarantee. We reserve the right to alter the specifications without any notice.

Download the A2 Grade Gas Oil Spec Sheet as a PDF

For a supply of BS 2869 Grade A2 red diesel that you can trust, contact the Crown Oil team on 0330 123 1444 today.

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