产品说明
GTL Base Oil 4# is a gas-to-liquid (gtl) group iii+ base oil, ~4 cst. It offers a high viscosity index, low volatility and excellent oxidation and thermal stability as a premium base stock for blending high-performance engine oils, driveline fluids and industrial lubricants. Typical physical properties are listed below for formulation reference.
主要性能特点
| Very high viscosity index
GTL chemistry delivers a high VI for excellent multigrade performance. |
Water-white purity
near-zero sulphur and aromatics for clean, stable finished oils. |
| Low Noack volatility
low evaporation loss supports low oil consumption. |
Excellent oxidation stability
stable base for long-drain engine and industrial oils. |
| Group III+ performance
approaches synthetic (PAO) performance at lower cost. |
Broad blending use
ideal for low-viscosity, fuel-economy engine oils. |
应用和性能水平
| 应用 | Blending of high-performance synthetic and semi-synthetic engine oils, transmission and gear fluids, greases and industrial lubricants requiring a Group III+ (GTL) base stock. |
| 规格 | API Group III+ Base Oil — base-oil group classification for this stock. 高粘度指数——适用于多级和宽温度范围配方的高VI值。. 低挥发性（诺克法）——蒸发损失小，油耗低。. 氧化稳定性与热稳定性——为长效成品润滑油提供稳定的基础。. 相容性——与各种添加剂体系和基础油相容。. |
| OEM适用性 | 配制合成及半合成成品润滑油的润滑油配方师。在投产前对成品油配方及性能进行验证。. |
| 重要通知 | 本产品是供配方设计师使用的调和原料，并非成品润滑油。请确认其是否适用于目标配方，并确定其添加量。”适用于”并不意味着该产品已获得成品润滑油的批准。. |
| 财产 | 测试方法 | 目标典型值 |
| 外观/颜色 | ASTM D1500 | Water-white (Saybolt +30) |
| 基础油组 | API 1509 | Group III+ (GTL) |
| 40°C 时的运动粘度 | ASTM D445 | 19.5 毫米²/秒 |
| 100°C 运动粘度 | ASTM D445 | 4.3 mm²/s |
| 粘度指数 | ASTM D2270 | 135 |
| 闪点，COC | ASTM D92 | 220°C |
| 浇注点 | ASTM D97 | -21°C |
| 诺克挥发度（250°C，1小时） | ASTM D5800 | 14.0 % mass |
| 15°C 时的密度 | ASTM D4052 | 0.820 g/cm³ |
| 硫含量 | ASTM D5185 | 非常低 |
| 饱和 | ASTM D2007 | ≥ 99 % |
注：上述目标值仅为产品的典型值，仅供参考；最终生产数据以KATMOTO官方技术数据表（TDS）和实验室测试报告为准。