Mobilgard HSD 20W-50 CI-4 by ExxonMobil is an extra high performance, multi-grade engine oil specifically formulated to 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 20W-50 CI-4 helps:


| Features |
| Outstanding thermal and oxidation stability |
| Excellent wear protection |
|
High Viscosity Index |
| Increased high temp/high shear performance |
| Outstanding TBN retention |
| Excellent water tolerance and separation capability |
| Excellent low temperature properties |
|
This product has the following approvals: |
|
|
MB-Approval 228.3 |
✓ |
|
This product meets or exceeds the requirements of: |
|
|
API CI-4 |
✓ |
Mobilgard HSD 20W-50 CI-4 is designed to provide outstanding performance in some of the most severe service marine applications of high-speed diesel engines, such as Mercedes Benz.
| Mobilgard HSD 20W50 CI-4 | |
| SAE Grade | 20W-50 |
| Viscosity, ASTM D 445 | |
| cSt @ 40ºC | 163 |
| cSt @ 100ºC | 18.9 |
| Viscosity Index, ASTM D 2270 | 132 |
| Sulphated Ash, wt%, ASTM D 874 | 1.1 |
| Total Base # , mg KOH/g, ASTM D 2896 | 10.2 |
| Pour Point, ºC, ASTM D 97 | -26 |
| Flash Point, ºC, ASTM D 92 | 235 |
| Density @ 15ºC kg/l, ASTM D 4052 | 0.88 |