Lube Guide
Store SearchMarine 25W-40 Inboard 4 Stroke Petrol Oil
Nulon Marine 25W-40 Inboard 4 Stroke Petrol Oil is a marine-specific formulation engineered to provide superior anti-wear and anti-corrosion protection for 4 stroke inboard marine engines.
Nulon’s unique Advanced Additive Technology (AAT) formulation dramatically reduces metal-to-metal friction, which reduces wear on vital components, allows the engine to run smoother, while providing optimum power and fuel economy. High levels of detergent ensure the oil stays “in-spec” longer, ensuring pistons stay clean and prevent rings from sticking.
Marine grade corrosion inhibitors also provide continual protection from the elements, both during operation and winter downtime.
Benefits
- Nulon’s Advanced Additive Technology (AAT) reduces engine wear and promotes optimum engine performance and fuel economy
- Exceeds API petrol rating SM/CF (supersedes SG, SH, SJ, SL)
- Enhanced corrosion inhibitors protect vital parts during seasonally idle periods
- Superior deposit protection keeps engine cleaner for longer over conventional mineral oils
Suitable for 4 stroke inboard engines including:
- Evinrude
- Mariner
- Mercruiser
- Suzuki
- Tohatsu
- Yamaha
- Yanmar
Typical Characteristics
| SAE Viscosity Grade | 25W-40 |
| KV @ 40°C (cSt) | 138.0 |
| KV @ 100°C (cSt) | 14.95 |
| Viscosity Index, ASTM D 2270 | 110 |
| Density @ 15°C kg/L | 0.8795 |
| Cold Cranking Viscosity, cP at -25°C | 4,620 |
| Pour Point, °C, ASTM D 97 | -18 |
| Sulphated Ash, Mass % | 1.29 |
| Base Number | 10.0 |
Meets and exceeds the following oil industry specifications:
- American Petroleum Institute   :   API SM/CF (supersedes SG, SH, SJ, SL)
Packaging
1 litre bottle (6 per carton) Part No: 4SI-1
5 litre bottle (3 per carton) Part No: 4SI-5