Medium-Speed Trunk Piston Engine Oil Additive Package
Medium-speed trunk piston engine oil additive package for four-stroke trunk piston diesel engines used in marine auxiliary, power generation, locomotive, and stationary applications. Operates at 300-1000 rpm with combined crankcase + cylinder lubrication (no separate cylinder oil). Provides controlled TBN (typically 25-55 mgKOH/g in finished oil) to handle the moderate-sulfur HFO, MGO, and dual-fuel operation of these engines. Compatible with all major OEM specifications including MAN ES (medium-speed), Wärtsilä W series, MaK, and Caterpillar 3500 series.
Технические характеристики
| appearance | Brown viscous liquid |
| treat rate | ~6-9 wt% in finished SAE 40 oil |
| sulfated ash | ~1.5-2.5 wt% |
| flash point (COC) | ≥200 °C |
| recommended base oil | Group I bright stock blend, SAE 40 cut |
| kinematic viscosity (100°C) | ~120-160 mm²/s |
| total base number (TBN) in finished oil | 25 / 30 / 40 / 55 mgKOH/g (grade-dependent) |
Области применения
- Marine four-stroke auxiliary diesel generators (MAN L+V series, Wärtsilä W20/W26/W32, MaK M20)
- Locomotive diesel engines (EMD 710, GE FDL, MTU 4000)
- Stationary diesel power generation (Caterpillar 3500/3600 series, Wärtsilä W32)
- Heavy fuel oil (HFO) burning trunk piston engines requiring moderate-TBN lubrication
- Dual-fuel (DF) medium-speed engines operating on diesel + natural gas
Особенности продукта
- Multiple TBN tiers (25/30/40/55) match HFO sulfur content and engine operating profile
- Combined crankcase + cylinder duty — no separate cylinder oil required
- High-temperature detergency keeps piston ring zone clean in HFO service
- Long drain interval performance for stationary and locomotive applications (>2000 h)
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