Fleetmaster CNG 15W/40 is a specially formulated multigrade 15W/40 oil tailored to meet the unique demands of compressed natural gas (CNG) engines found in modern commercial vehicles and buses.

CNG engines operate at elevated temperatures, which can lead to oil degradation and thickening, ultimately diminishing engine protection. This can result in various issues, including the formation of inlet valve deposits, outlet valve recession, bearing corrosion, increased oil consumption, and a shortened lifespan for lubricants. Fleetmaster CNG 15W/40 is engineered to mitigate the adverse effects of these conditions, ensuring improved engine protection and extended oil durability.

Furthermore, Fleetmaster CNG 15W/40 has received approval for use in MAN CNG buses that require lubricants meeting the MAN M3271-1 specification. It also complies with the requirements of Mercedes Benz MB226.9, Renault RGD, Volvo, and Scania CNG trucks and buses. This versatile oil is suitable for most CNG and LPG-powered vehicles, making it a reliable choice for a wide range of applications in the commercial vehicle and bus sector.


• Impressive high viscosity index ensures smooth startup and consistent protection even under the demanding operating temperatures of CNG engines.

• Exceptional resistance to oxidation and nitration, leading to superior protection against deposit formation and oil thickening.

• Outstanding anti-wear and anti-corrosion properties contribute to extended bearing lifespan.

• Low ash content aids in prolonging the longevity of catalytic exhaust systems.

• Minimized exhaust valve recession and inlet valve deposits for improved engine performance.

• Extended oil life attributed to the high level of protection provided.


Fleetmaster CNG 15W/40 meets the following demanding performance requirements: Mercedes Benz MB 226.9

Scania Gas OSC11 G03, OSC9 G01, OSC9 G02, OSC9 G03

Renault RGD Volvo CNG

Fleetmaster CNG 15W/40 is an approved lubricant for MAN CNG powered vehicles requiring the lubricant specification M3271-1 (Approval Number TUC 0545/09).

Fleetmaster CNG 15W/40 is suitable for use in most CNG and LPG powered vehicles. Always consult your vehicle owner’s manual for the manufacturer‘s recommendations.

PropertyASTM MethodResults
Density at 15°CD-40520.865
Viscosity (cSt) @ 100°CD-44513.8
@ 40°CD-445103
Viscosity IndexD-2270135
Sulphated Ash (% wt)D-8740.8
TBN (mg KOH/g)D-28968.0
TAN (mg KOH/g)D-6642.98
Flash Point (°C)D-92224
Pour Point (°C)D-97-36

Available in:         Bulk, 1000 Litres, 200 Litres and 20 Litres

Item code:             VI2-2246

Product Informations

Product Data Sheet

Material Safety Data Sheet