5W-40Diesel Engine Oils
RAMCO 5W-40 API CK-4/SN
Fully Synthetic · API CK-4/SN
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Diesel Engine Oils
RAMCO 15W-40 API CI-4/SL
Viscosity Grade
15W-40
Specification
API CI-4/SL
Category
Mineral
A proven heavy-duty multigrade for mixed fleets, delivering reliable protection for turbocharged diesel engines in high ambient temperatures.
Performance Highlights
Wear Protection
Additive film guards critical metal surfaces under load.
Oxidation Resistance
Resists thermal breakdown across long duty cycles.
Deposit Control
Keeps internal components clean and free of sludge.
Thermal Stability
Maintains film strength in high-temperature operation.
Smooth Performance
Controlled friction for responsive, quiet running.
Technical Specifications
| Property | Method | Typical Value |
|---|---|---|
| Density @29.5°C, gm/cc | ASTM D-1298 | 0.878 |
| Viscosity @100°C, cSt | ASTM D-445 | 14.9 |
| Viscosity @40°C, cSt | ASTM D-445 | 114.8 |
| Viscosity Index | ASTM D-2270 | 136 |
| Pour Point, °C | ASTM D-97 | -27 |
| Flash Point, °C | ASTM D-92 | 236 |
| TBN, mgKOH/gm | ASTM D-2896 | 10.0 |
Always refer to the vehicle or equipment manufacturer's recommended specifications before selecting a lubricant.
Meets or Exceeds
- API CI-4
- API SL
Available Packaging
250ML500ML1L3L4L5L20L200L Drum1000L IBC25,000L Flexitank
