Product Description
Mobilgard HSD 15W-40 by Mobil is an extra high performance, multi-grade engine oil specifically formulated for severe service high-speed diesel engines in marine applications. Its advanced chemistry provides outstanding performance in both modern, demanding low-emission diesel engines and older diesel engines operating on low or high sulphur distillate fuel. Mobilgard HSD 15W-40 is approved or recommended by all the major marine high-speed diesel engine builders.
Features and Benefits
Mobilgard HSD 15W-40 combines a blend of high quality base stocks with a superior balanced additive system to provide exceptional control of oil thickening due to soot build-up and high temperatures, as well as outstanding resistance to oxidation, corrosion, and high temperature varnish deposits.
When used as recommended, Mobilgard HSD 15W-40 diesel engine oil provides the following features and potential benefits:
| Features | Advantages and Potential Benefits |
| Outstanding thermal and oxidation stability | Reduces formation of deposits and sludge build-up
Keeps engines clean and operating smoothly |
| Excellent wear protection | Extended life of critical engine components |
| High Viscosity Index | Stable oil film at all operating temperatures
Reduced oil consumption |
| Increased high temp/high shear performance | Reduced engine scuffing, bore polishing and ring sticking |
| Outstanding TBN retention | Protects engine parts from corrosive wear and deposits |
| Excellent water tolerance and separation capability | Maintains effective lubrication and film-strength in the presence of water |
| Excellent low temperature properties | Improved oil pumpability/circulation at start-up
Start-up wear protection especially for valve train area |
Applications
Mobilgard HSD 15W-40 is designed to provide outstanding performance in the most severe service marine applications of modern high-speed diesel engines, such as Caterpillar 3500 Series and smaller bore, Cummins, Volvo, Daihatsu, Yanmar, and others.
Specifications and Approvals
| This product has the following approvals: |
| MB-Approval 228.3 |
| VOLVO VDS-3 |
| MTU Oil Category 2 |
| This product is recommended for use in applications requiring: |
| API CF |
| API CF-4 |
| API CG-4 |
| MAN M 3275-1 |
| Cummins CES 20071 |
| Cummins CES 20072 |
| Detroit 7SE 270 (4-STROKE CYCLE) |
| This product meets or exceeds the requirements of: |
| API CH-4 |
| API CI-4 |
| API SJ |
| API SL |
| Cummins CES 20076 |
| Cummins CES 20077 |
| ACEA E7 |
| CATERPILLAR ECF-2 |
Properties and Specifications
| Property | |
| Grade | SAE 15W-40 |
| Ash, Sulfated, mass%, ASTM D874 | 1.1 |
| Flash Point, °C, ASTM D92 | 227 |
| Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 | 14.2 |
| Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 | 105 |
| Pour Point, °C, ASTM D97 | -33 |
| Specific Gravity, 15 C/15 C, ASTM D4052 | 0.881 |
| Total Base Number, mgKOH/g, ASTM D2896 | 10 |
| Viscosity Index, ASTM D2270 | 138 |
Health and safety
Remark
It cannot be guaranteed that the product information given above is up to date. For the latest version of the Product Data Sheet we refer to the product library of ExxonMobil.