Fleetmaster Semi Syn CJ-4 10W/40 is meticulously crafted using cutting-edge technology, blending mineral and synthetic base oils to cater to the demands of heavy-duty diesel engines enduring the rugged conditions. This exceptional lubricant boasts an ultra-high dispersant and anti-wear formulation that goes above and beyond the API CJ-4 requirements. It is purpose-built to align with the latest US07 emission standards, tailored specifically for engines featuring exhaust treatment systems, including Diesel Particulate Filters (DPF) and cooled Exhaust Gas Recirculation (EGR), while running on low sulfur fuels.

Fleetmaster Semi Syn CJ-4 10W/40 surpasses numerous international specifications, ensuring peak performance and extended service life in four-stroke turbocharged and naturally aspirated diesel engines. It plays a crucial role in mitigating soot thickening in the latest low-emission US engines.

This unique formula of Fleetmaster Semi Syn CJ-4 10W/40 takes engine cleanliness in modern, highly stressed, turbocharged engines to new heights. It adeptly manages and suppresses bore polishing tendencies, high oil consumption rates, and premature wear, ensuring engine longevity.

The outstanding performance of Fleetmaster Semi Syn CJ-4 10W/40 serves to curtail the formation of detrimental deposits in ring grooves and critical areas, particularly in the quench top ring belt sections of “tight piston” engines.

Moreover, the meticulously balanced over-based alkaline reserve additives (TBN components) in Fleetmaster Semi Syn CJ-4 10W/40 effectively neutralize acidic combustion by-products, stemming from fuel sulfur content, especially in diesel fuel. This not only aids in reducing the corrosion of vital engine components but also prevents the otherwise catastrophic effects these by-products can have on the oil itself.


Fleetmaster Semi Syn CJ-4 10W/40 meets the requirements of the following specifications:

API: CJ-4, CI-4 PLUS, CI-4, CH-4, CG-4, CF-4



Euro Emission requirements: I, II, III, IV, V, and VI

OEMs:     CAT ECF-3, ECF-2, ECF-1-A                        Cummins CES 20081

Detroit Diesel PGOS 93K218                         Deutz DQC III-10 LA

Mack EO-O Premium Plus                             Mercedes Benz MB 228.31

M.A.N. M3575                                                 MTU Type 2.1

Renault RVI RLD-3                                         Volvo VDS-4 Suitable for Detroit Diesel

SAE ViscositySAE J30010W/40
Density (kg/m3)ASTM D-12980.861
Viscosity (cSt) @ 100°CASTM D-44514.25
@ 40°CASTM D-44590.7
CCS (cP) @ -25°CASTM D-52936460
Viscosity IndexASTM D-2270155
HTHS (cP)ASTM D-46834.19
Flash Point COC (°C)ASTM D-92225
Pour Point (°C)ASTM D-97-42
Sulphated Ash (% wt)ASTM D-8741.00
TBN (mg KOH/g)ASTM D-28968.5
Phosphorus (% wt)ASTM D-49510.11
Zinc (% wt)ICP0.12
Calcium (% wt)ICP0.24

Available in:         Bulk, 200 Litres and 20 Litres

Item code:             VI2-2263

Product Informations

Product Data Sheet

Material Safety Data Sheet