super trunk oil is a lubricant for four-stroke trunk-piston engines running at medium speed on high-sulphur fuel. Grades: 5W50. Its published base number is 40 mg KOH/g.
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Grades & published data
Typical values from the product data sheet, each with its test method.
| Property | 5W50 | Method |
|---|---|---|
| Kinematic viscosity at 100 °CcSt | 15.5 | ASTM D-445 |
| Viscosity index | 95 | ASTM D-2270 |
| Total base number (TBN)mg KOH/g | 40 | ASTM D-2896 |
| Pour point°C | -12 | ASTM D-97 |
| Flash point (open cup)°C | 220 | ASTM D-92 |
| Density at 15 °C | 912 | ASTM D-4052 |
Overview
super trunk oil is a lubricant for four-stroke trunk-piston engines running at medium speed on high-sulphur fuel. Grades: 5W50. Its published base number is 40 mg KOH/g.
In marine and stationary diesel service, the base number is matched to the sulphur content of the fuel: higher-sulphur fuels need a higher base number to neutralise the acids formed in combustion. The specification table lists each grade with its test methods.
Application
Medium-speed four-stroke engines where the fuel's sulphur content calls for a high base number.
Feature
5W50: KV100 15.5 cSt, VI 95, TBN 40 mg KOH/g, pour point -12 °C.
By the sulphur content of the fuel and the engine maker's guidance. Share your fuel analysis and engine model and we will confirm the right product.
Next step
The range above is what we publish. Formulation to a customer brief is a route of its own, and a sample is the first stage of it.
