Mobilgard M30 Series oils can be used in most medium-speed trunk piston engine applications. They are recommended for use in main propulsion and auxiliary engines on deep-sea vessels; in main propulsion engines on coastal and river ships; and in stationary power plants. This new Series of oils is the result of an extensive research and development program, incorporating ExxonMobil's patented DAC (Detecting Aspahltene Contamination) Test.
Mobilgard M30 Series oils are designed to meet the needs of engines operating on heavy fuel. They are recommended for use in the latest model medium speed diesel engines and are especially beneficial in engines having low crankcase oil consumption or operating with low cylinder liner temperatures. Relatively high alkalinity reserves in these oils provide excellent protection in neutralising the strong acids resulting from the use of high sulphur fuels that find access to the crankcase to promote oil degradation and ring, cylinder, and bearing corrosion.
Typical Properties
|
M330 |
M430 |
SAE Grade |
30 |
40 |
Specific Gravity at 15ºC |
0.907 |
0.907 |
Flash Point, ºC, ASTM D 92 |
244 |
250 |
Pour Point, ºC, ASTM D 97 |
-6 |
-6 |
Viscosity, ASTM D 445, cSt, at 100ºC |
12 |
14 |
Viscosity Index, ASTM D2270 |
107 |
105 |
TBN, mg KOH/g, ASTM D 2896 |
30 |
30 |
Sulphated Ash, wt%, ASTM D 874 |
3.8 |
3.8 |