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Hardworking Technology

You need to know that your oil will protect your engineunder all conditions. No matter how hot, cold, steep ,dusty, muddy or extended your operations, you demand protection.

Shell Rimula heavy-duty diesel engine oils provideprotection in three critical areas:

  1. Acid control – protection against corrosion from acids formed as fuel burns
  2. Deposit control – engine cleanliness for optimum performance and long life
  3. Wear control – moving metal engine surfaces kept apart for long engine life.

Shell Rimula R4 X

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Shell Rimula R4 X technology is designed to adapt and protect under the full range of conditions found inmodern engines. From the high-pressure contacts in the valve train to the extreme temperatures of the pistons and rings, Shell Rimula R4 X can help you control your maintenance and operating costs by providing a versatile one-oil solution for modern fleets.



Shell Rimula R4 X contains a specially optimised combination of performance additives and chemicals that is designed to provide the right level of engine cleanliness, wear and oxidation protection under the tough conditions

in engines equipped with exhaust gas recirculation (EGR). The performance of new Shell Rimula R4 X has been clearly demonstrated in industry and original equipment manufacturer specification engine tests and in trials under real-world engine and vehicle operating conditions.

Better protection for engines with EGR

Exhaust gas recirculation (EGR) introduces some exhaust gas into the inlet air charge to reduce peak combustion temperatures, which lowers emissions of nitrogen oxides. The exhaust gases contain acids and soot particles that can have a detrimental effect on oil performance in terms of preventing corrosion- and soot-induced wear. EGR also leads to higher oil temperatures, which stress the oil further.


Shell Rimula R4 X has been designed to lubricate in the performance demanding environment of engines with EGR. Shell Rimula R4 X can help to reduce NOx and particulate emissions in modern engines. It is suitable for all pre-US 2007 engines, most Euro 4 and 5 engines (without diesel particulate filters), as well as earlier engine types.

Active technology

Maintaining cleanliness in an engine is crucial for engine operating efficiency and wear control. Shell Rimula R4 X is formulated with an optimised

detergent additive system that is designed to keep pistons clean, and soot dispersants that reduce sludge deposits in heavy-duty diesel engines

Oxidation control

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Shell Rimula R4 X helps to prevent oil thickening and the formation of harmful deposits in all areas of the engine, including the bulk oil in the sump and the thin oil films at high temperatures in the piston ring belt area.

The product's improved oxidation control is demonstrated in specification engine tests and laboratory rig tests. For example, in the pressure differential scanning calorimetry (PDSC) test, Shell Rimula R4 X shows significantly better oxidation control performance relative to ACEA E7 specification limits.

Soot control

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An essential feature of a good modern diesel oil is to keep soot particles finely dispersed in the oil to prevent excessive oil thickening, engine sludge formation and soot-related engine wear.

Shell Rimula R4 X provides a high level of soot dispersancy through the use of optimised levels of selected dispersant additives and enables protection at higher soot levels (up to 6%), as demonstrated in

EGR engine specification tests.

In the Mack T-8E soot control test, for example, Shell Rimula R4 X's strong soot viscosity control performance shows it can keep high levels of soot particles well dispersed to enable smooth start-up at low temperatures and avoid filter plugging and soot-induced wear.

Acid and corrosion control

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Combustion gases produce harmful acids that come into  contact with oil in the piston ring belt area and pass into the oil sump. These acids are controlled using detergent additives, which neutralise acid and help to prevent piston deposits and the corrosion of metal surfaces.

Shell Rimula R4 X offers excellent control of acids and helps to prevent the chemical corrosion of engine bearings, for example, crankshaft, main and camshaft bearings. This is demonstrated in the performance of Shell

Rimula R4 X in the Mack T-12 engine test.

Engine wear control

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Shell Rimula R4 X offers high levels of engine wear protection in the critical areas of the valve train and the piston ring cylinder liner, which is demonstrated in the specification engine tests for API and ACEA and major original equipment manufacturers.

Shell Rimula R4 X's engine wear protection is achieved through the addition of anti-wear additives that are designed to form protective films in metal-to-metal contacts under different engine operating conditions.

In addition, Shell Rimula R4 X contains active soot dispersant additives to keep soot particles finely dispersed and help prevent wear.

In the Mack T-10 engine test, Shell Rimula R4 X demonstrated 30% better wear protection of engine rings and liners than required to meet the API CI-4 specification.

Shell Rimula R4 X – Application guide

With its excellent protection against wear and deposits, Shell Rimula R4 X is suitable for a wide range of high-power, heavy-duty diesel engine applications. Its wide range of approvals and specifications from many of the world’s leading engine makers makes Shell Rimula R4 X is an excellent choice for on-highway logistics, general haulage and public transport operators. It is suitable for all pre-US 2007 engines, most Euro 4 and 5 engines (without diesel particulate filters), as well as earlier engine types.


API: CI-4, CH-4, CG-4, CF-4, CF, SL; ACEA: E7, E5, E3; JASO: DH-1: Global: DHD-1; Caterpillar: ECF-1-A, ECF-2; Cummins: CES 20078, 77, 76, 75, 72, 71; DDC: 93K215; DEUTZ: DQC III-10; Mack: EO-M, EO-M+; MAN: M3275-1; MB Approval: 228.3; MTU: Category 2; Renault Trucks: RLD-2; Volvo: VDS-3.


In addition to the full range of Shell Rimula heavy-duty engine oils, Shell Lubricants also offers a complete portfolio of lubricants for every part of your equipment, including Shell Spirax gear, axle and transmission fluids, and Shell Gadus greases.


Health and safety

Shell Rimula R4 X is unlikely to present any significant health or safety hazard when properly used in the recommended application and if good standards of industrial and personal hygiene are maintained.


Avoid contact with skin. Use impervious gloves with used oil. After skin contact, wash immediately with soap and water. For further guidance on product health and safety, refer to the appropriate Shell product safety data sheet.

Protect the environment

Take used oil to an authorised collection point. Do not discharge into drains, soil or water.


Advice on applications not covered in this leaflet may be obtained from your Shell representative.

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