Taro® Ultra Cylinder Oil: Key Features for Two-Stroke Marine Engines
Taro® Ultra is Chevron’s advanced cylinder oil series for slow-speed two-stroke crosshead marine engines. It is engineered to handle modern fuels, including VLSFO, MGO, HFO with scrubber systems, LNG, and methanol, providing superior protection for cylinder liners and piston rings.
1. High BN for Acid Neutralization
The Base Number (BN) in Taro® Ultra oils ranges from 40 to 140, depending on the variant. BN ensures effective neutralization of acids produced from sulphur-containing fuels, preventing acidic corrosion, especially in engines running with high-sulphur fuels or intermittent distillates.
2. Low Deposit Formation
Taro® Ultra contains advanced detergent-dispersant technology, which minimizes piston ring and crown deposits, even under challenging operating conditions. This improves engine efficiency and reduces the risk of scuffing.
3. Cold Corrosion Protection
When operating with fuels having varying sulphur content, cold corrosion is a major concern. Taro® Ultra provides excellent alkalinity reserve and protective film strength to prevent corrosion at cylinder liner and piston crown top lands.
4. Fuel Flexibility
Taro® Ultra is compatible with a wide range of modern marine fuels:
- VLSFO (Very Low Sulphur Fuel Oil)
- MGO / MDO (Marine Gas / Diesel Oil)
- HSHFO with scrubbers
- LNG / Methanol
The feed rate can be optimized depending on fuel type and engine condition, improving oil efficiency and operational cost.
5. Variants Overview
| Product | BN | Fuel Compatibility | Key Benefits |
|---|---|---|---|
| Taro® Ultra Advanced 40 | 40 | VLSFO, MGO/MDO, LNG/LPG, Methanol | High BN, low deposits, corrosion protection, fuel flexibility |
| Taro® Ultra 40 | 40 | Low-sulphur fuels, VLSFO, MGO/MDO, Methanol | Reliable protection, optimized for intermittent distillates |
| Taro® Ultra 70 | 70 | Wide fuel range | Versatile protection, high-load engines |
| Taro® Ultra 100 | 100 | HSHFO with scrubbers | Corrosion control, suitable for high BN engines |
| Taro® Ultra 140 | 140 | HSHFO with scrubbers | Cold corrosion protection, optimized feed rate |
Tip: Selecting the correct BN depends on fuel sulphur content, engine condition, and manufacturer recommendations (OEM). Overly high BN may contribute to abrasive deposits if mismatched.
6. Typical Fuel Applications
| Fuel Type | Suggested Technical Symbol | Description |
|---|---|---|
| VLSFO | FO-LS | Low-sulphur residual fuel oil for marine applications |
| MGO/MDO | DF | Distillate fuel used in marine diesel engines |
| HSHFO with scrubber | HFO + EGCS | High-sulphur heavy fuel oil used with exhaust gas cleaning system |
| LNG/LPG | GAS | Gaseous marine fuels for dual-fuel or gas engines |
| Methanol | MeOH | Methanol as an alternative low-carbon marine fuel |
7. Summary
Taro® Ultra cylinder oils deliver:
- High performance for modern two-stroke marine engines
- Acid neutralization with wide BN range
- Low deposit formation for pistons and crowns
- Cold corrosion protection for liners and rings
- Fuel flexibility for VLSFO, MGO/MDO, HSHFO, LNG, and methanol
Global Marine Lubricants Company Limited
Office: 328C Phan Dinh Phung, Cau Kieu Ward, Ho Chi Minh City, Vietnam
Tax Code: 0319412061
Email: sales@lubricantmarine.com
Hotline: +84 567 977 668
Website: lubricantmarine.com
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