Mobilgard 1 SHC
Zinc-free synthetic oil for high-power distillate-fuelled marine diesel engines
SAE 40
| Property | Typical value | Method |
|---|---|---|
| Ash, Sulfatedwt% | 6.5 | ASTM D874 |
| Flash point, Cleveland Open Cup°C | 228 | ASTM D92 |
| Kinematic viscosity @ 100 Cmm2/s | 14 | ASTM D445 |
| Pour point°C | -6 | ASTM D97 |
| Specific gravity, 15 C/15 C | 0.922 | ASTM D4052 |
| Total base numbermgKOH/g | 50 | ASTM D2896 |
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Mobilgard M50 is a premium, extra high performance 50 TBN engine oil designed for the most severe residual-fuelled medium-speed diesel applications in marine and stationary power industries. Formulated with the latest additive detergent technology, this market-leading trunk piston engine oil provides outstanding residual fuel compatibility for excellent engine cleanliness, especially in the crankcase, camshaft areas, ring belt and piston undercrowns, along with excellent high-temperature oxidation and thermal stability, low volatility, high load-carrying properties and corrosion protection. Mobilgard M50 suits most medium-speed trunk piston engine applications, including main propulsion and auxiliary engines on deep-sea vessels, main propulsion engines on coastal and river ships, and stationary power plants, and was developed using ExxonMobil's patented DAC (Detecting Asphaltene Contamination) Test. It is especially beneficial in engines with low crankcase oil consumption or low cylinder liner temperatures, where conventional lube oils have suffered reduced oil life and drain intervals from severe TBN depletion; its relatively high alkalinity reserves neutralise the strong acids from high sulphur fuels, and the product is also recommended for topping up existing oil charges with low TBN to raise them to an acceptable value. Mobilgard M50 has industry-leading thermal and oxidation stability, excellent TBN retention and resistance to viscosity increase over long operating periods, a high level of engine cleanliness and wear protection, and superior lube/fuel compatibility with easy separation from water.