locomotive Oil is a zinc-free engine oil for locomotive diesel engines, made from base oils and additives formulated without zinc. It is offered as SAE 40 and SAE 15w-40.
Grades & published data
Typical values from the product data sheet, each with its test method.
| Property | SAE 40 | SAE 15w-40 | Method |
|---|---|---|---|
| Kinematic viscosity at 100 °CcSt | 15 | 15.5 | ASTM D-445 |
| Viscosity index | 95 | 125 | ASTM D-2270 |
| Total base number (TBN)mg KOH/g | 16 | 16 | ASTM D-2896 |
| Pour point°C | -18 | -30 | ASTM D-97 |
| Flash point (open cup)°C | 230 | 215 | ASTM D-92 |
| Density at 15 °C | 902 | 893 | ASTM D-4052 |
Overview
locomotive Oil is a zinc-free engine oil for locomotive diesel engines, made from base oils and additives formulated without zinc. It is offered as SAE 40 and SAE 15w-40.
Zinc-free formulation matters where the engine builder restricts zinc in the lubricant — some locomotive engines use bearing or component materials for which zinc-containing oils are not recommended. Both grades publish a TBN of 16 mg KOH/g in the specification table.
Application
Railway diesel engines whose manufacturer calls for a zinc-free lubricant.
Application
SAE 40 for engines specified for a monograde oil; SAE 15w-40 where the manual allows a multigrade.
Feature
Formulated without zinc, as stated in the product's source documentation.
Feature
SAE 15w-40: KV100 15.5 cSt, VI 125, TBN 16, pour point -30 °C; SAE 40: KV100 15 cSt, VI 95, TBN 16, pour point -18 °C.
Some locomotive engine builders restrict zinc because of the materials used in their engines. Always confirm the engine builder's lubricant requirement before changing oil.
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.
