| Unit | Shortform | Grade |
| PC | Z40 | 4020 |
| PC | Z40 | 4030 |
COPTON Z40
High base reserve effectively neutralizes acidic by-products from combustion of high-sulfur fuels to deliver reliable anti-corrosion and anti-rust protection for engines.
Excellent base number retention ensures continuous and effective engine protection throughout the oil drain interval.
Superior anti-wear property helps prolong engine service life.
Outstanding thermal and oxidative stability suppresses high-temperature deposit formation and extends lubricant service life.
Premium detergency and dispersancy maintains internal engine cleanliness.
Good water separability rapidly removes entrained water from oil and prevents oil emulsification.
Applicable for lubricating marine medium-speed trunk piston diesel engines burning fuels with sulfur content below 3.5%, large marine auxiliary engines, and land-based diesel generator sets.
| Item | Grade | Testing method | ||
| Z40 Medium-Speed Engine Oil | 4020 | 4030 | ||
| Density @ 15?C, kg/l | 888.30 | 894.00 | SH/T 0604 | |
| Viscosity @ 100?C, cSt | 14.48 | 15.06 | GB/T 265 | |
| Pour point | -25 | -16 | GB/T 3535 | |
| Flash Point, ?C | 236.00 | 240.00 | GB/T 3536 | |
| TBN, mg KOH/g | 21.70 | 30.10 | GB/T 2433 | |
170KG or packing according to customer needs.