- High-speed marine
SAE 40
Fully synthetic low-ash oil for high-speed marine diesel engines, API CK-4
ViscositySAE
Recommended for
Same grade SAE 5W-40 · Heavy-duty diesel
Same grade SAE 5W-40 · Cars
Same grade SAE 5W-40 · High-speed marine
Business customers only. We sell wholesale, invoiced to registered companies.
Official approval
Detroit Fluids Specification 93K222
Detroit Diesel's current heavy-duty diesel engine oil specification, at API CK-4 level, with increased oxidation and aeration requirements.
Official approval
Detroit Fluids Specification 93K218
Detroit Diesel's engine oil specification at API CJ-4 level, for engines with a particulate filter, with capped sulphated ash.
Official approval
MTU Oil Category 2.1 (low SAPS)
The low-ash form of MTU category 2: a multigrade oil with under 1 % ash, approved only where the fuel carries less than 50 mg/kg sulphur.
Official approval
The Cummins specification matching API CK-4, for modern heavy-duty diesel engines.
Derived from the vehicle makers' approvals this product meets. Check the specification your vehicle's manual requires.
| Property | Typical value | Method |
|---|---|---|
| Hi-Temp Hi-Shear Viscosity @ 150 C 1x10(6) sec(-1)mPa.s | 3.8 | ASTM D4683 |
| Ash, Sulfated, mass% | 1 | ASTM D874 |
| Cold-Cranking Simulator, Apparent Viscosity @ -30 CmPa.s | 6510 | ASTM D5293 |
| Mini-Rotary Viscometer, Apparent Viscosity, -35 CmPa.s | 16800 | ASTM D4684 |
| Total base numbermgKOH/g | 12 | ASTM D2896 |
| Kinematic viscosity @ 40 Cmm2/s | 84 | ASTM D445 |
| Kinematic viscosity @ 100 Cmm2/s | 13.8 | ASTM D445 |
| Specific gravity, 15.6 C/15.6 C | 0.853 | ASTM D4052 |
| Viscosity index | 150 | ASTM D2270 |
| Flash point, Cleveland Open Cup°C | 233 | ASTM D92 |

Mobilgard 1 HSD is an advanced fully synthetic, high speed marine diesel engine oil that helps extend engine life while providing long drain capability and potential fuel economy for modern and latest diesel engine technology operating in severe applications. It is a CK-4 API oil, developed through cooperative work between ExxonMobil and major equipment builders, that meets or exceeds the latest API and ACEA specifications for diesel engine oils, as well as many engine manufacturer requirements including Cummins and Caterpillar. Mobilgard 1 HSD is recommended for engine generations up to the latest and most sophisticated high performance diesel engines with turbochargers, direct injection and low emission designs featuring all types of exhaust after-treatment, for on-highway engines in high speed/high load and stop-and-go conditions, off-highway engines in severe low speed/heavy load conditions, most diesel equipment from American and European builders, high performance gasoline engines and mixed fleets, and refrigeration units. It delivers unsurpassed oxidation stability, exceptional low-temperature fluidity and pumpability for smooth cold starting, and a sophisticated additive system for excellent wear performance and long engine life. Its low-ash formulation protects exhaust after-treatment devices, including turbochargers and EGR systems, while advanced cleanliness performance prevents deposits. Approvals include Detroit Fluids Specification 93K222/93K218, MTU Oil Category 2.1, Cummins CES 20081/20086, API CK-4, Caterpillar ECF-3, ACEA E7/E11 and JASO DH-2.
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