Home > Diesel lubricant RoadMaster 300 from Anglo Design

Diesel lubricant RoadMaster 300 from Anglo Design

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Anglomoil, a division of Anglo Design , has introduced a new lubricant, Roadmaster 300, which meets the API CI-4 / SL specification. The Roadmaster 300 has been registered with Mack Trucks for EO-M Plus approval and with Cummins for compliance with the CES 20076, 20077 and 20078 specifications.

RoadMaster 300 is suitable for use in all European heavy duty diesel engines complying with the recent Euro 4 exhaust emission legislation.

Features and benefits of Roadmaster 300

Roadmaster 300 has a formulation that provides a high total base number (TBN) indicating a high alkalinity which is essential to combat corrosion from high sulphur still found in some countries.


Anti-pollution legislation in the US, Europe and Japan continues to drive engine oil specifications. The aim of the legislation for all countries is similar, with the result that specifications are now becoming more closely aligned than ever before.

The new heavy duty diesel oil specification introduced recently in Europe, ACEA E7-04, is recognised as a global standard of performance. ACEA E7-04 is a combination of European and American test procedures.

Cummins Engine’s new oil specification, CES 20077, includes ACEA E7-04 amongst its requirements. The Japanese Automotive Standards Organisation (JASO) DH-1 specification addresses the performance requirements of Japanese designed engines.

These three specifications which meet the most severe requirements of the world’s three manufacturing groups have now been combined into one joint international specification, DHD-1.

RoadMaster 300 meets all these specifications including DHD-1.

Effect on engines: The diesel is a comparatively ‘clean’ engine and the new regulations are concerned only with oxides of nitrogen (which helps to form smog) and particulate matter (soot). Current engine designs employ exhaust gas recirculation and retarded timing of the fuel injection. These measures are intended to reduce exhaust emissions.

Effect on oil: The engine design changes which have been introduced are estimated to double the thermal stress on the oil and at the same time highly increase the quantity of soot introduced into the oil.

Engine oils must now possess highly increased power of dispersions to keep the soot in suspension. Soot is also formed by combustion of the lubricating oil and the oil consumption of modern engines has been reduced.

This in turn exposes the oil longer to the hot zones of the engine and less fresh oil will be added between oil changes. The ash content of the oil is now considered as less significant and ash contents are rising, giving better detergency and higher TBN.


American engine manufacturers prefer that the viscosity of CI-4 oils be SAE 15W 40. Accordingly, the viscosity of RoadMaster 300 is SAE 15W 40 in line with manufacturers’ preferences.

Typical Characteristics

  • Density at 15.6˚C: 0.8883
  • Viscosity at 40˚C: 104.2 cS
  • Viscosity at 100˚C: 13.9 cS
  • Viscosity at -15˚C: 3390 cP
  • Viscosity Index: 133
  • L38 shear viscosity at 100˚C: 12.9 cS
  • Injector shear viscosity at 100˚C: 12.42 cS
  • High temp / high shear vis at 150˚C: 3.85 cS
  • Total Base Number: 10.5
  • Sulphated ash: 1.35%

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