Overview
Multigrade viscosity lubricating oil is engineered to perform under varying temperature conditions, combining the fluidity of low-viscosity oils in cold starts with the protective thickness of high-viscosity oils at operating temperatures. Its formulation typically includes base oils (mineral, synthetic, or semi-synthetic) and additives like viscosity index improvers, detergents, and anti-wear agents. This lubricant is widely adopted in modern engines and machinery, where temperature fluctuations are common. Its dual-grade labeling (e.g., 10W-40) indicates performance at low (Winter) and high temperatures, ensuring year-round reliability.
Physical and Chemical Properties
Multigrade oils exhibit a high viscosity index (VI), meaning their viscosity changes minimally with temperature. Additives such as polymethacrylates or olefin copolymers enable this behavior by expanding molecular chains at higher temperatures. The oils are typically non-corrosive and resistant to oxidation, enhancing equipment lifespan. Key metrics include pour point (below -30°C for 5W grades) and flash point (exceeding 200°C). Synthetic variants offer superior thermal stability compared to mineral-based oils, making them suitable for extreme conditions.
Main Applications
Primary use cases include passenger vehicles, heavy-duty diesel engines, and industrial gearboxes. In automotive contexts, multigrade oils reduce engine wear during cold starts while maintaining lubrication at high speeds. Industrial applications include hydraulic systems and compressors, where consistent viscosity prevents component fatigue. Specialized formulations cater to hybrid engines or turbocharged systems, addressing unique heat and electrical insulation requirements. Always consult manufacturer guidelines for grade compatibility.
Safety and Storage
Store in original containers or certified drums, avoiding exposure to direct sunlight or temperatures above 60°C. Use grounded containers to prevent static accumulation. Spills should be contained with absorbent materials and disposed of as hazardous waste. Personal protective equipment (gloves, goggles) is recommended during handling. Avoid prolonged skin contact to prevent dermatitis. In case of ingestion, seek medical attention immediately—do not induce vomiting.
B2B Procurement Guide
Bulk buyers should prioritize suppliers with ISO 9001 or API certification to ensure quality consistency. Key considerations include viscosity grade alignment with equipment specifications, additive packages (e.g., anti-foaming agents), and compliance with standards like ACEA or JASO. Negotiate tiered pricing for volumes exceeding 1,000 liters. Request technical datasheets and batch test reports. For global procurement, verify shipping regulations—some synthetic oils may require hazardous material documentation.
Related Manufacturers
- 主营：工业润滑油、润滑油、润滑脂、高温黄油
- 主营：润滑油、防锈油、防锈专用油、长效防护油品
- 主营：高精度滤油机、袋式过滤器、自清洗过滤器、高粘度滤油机、浅层砂过滤器、液压油过滤器、液压油滤芯、黎明过滤器、自洁式空气过滤器、初效过滤器、高效过滤器、中效过滤器、颇尔滤油机
- 主营：润滑油、工业齿轮油、液压油、导热油
- 主营：离心泵、自吸泵、液下泵、润滑油泵、管道泵、磁力泵、齿轮泵、隔膜泵
- 主营：二甲苯、环保溶剂、丙二醇甲醚、润滑油、二乙二醇乙醚、涂料成膜助剂
- 主营：运动粘度润滑油
- 主营：润滑油、阳离子交换树脂
- 主营：真空泵、化工泵、冠申泵业、广州螺杆空压机润滑油、节能螺杆、螺杆压缩机、低压空压机、风冷空压机、罗茨鼓风机、冷冻干燥机、螺杆空压机、变频空压机、激光切割螺杆机、空压机、工业型冷干机、油气分离器、高效工频电机、吸附式冷干机、双级螺杆空压机、低压空气压缩机、捷豹螺杆空压机、常压空气压缩机、储水罐、冷冻式干燥机、永磁变频电机、空气滤芯
- 主营：120号溶剂油、航空煤油、异构十二烷、高粘度、260号溶剂油、二氯甲烷、三氯乙烯、四氯乙烯、正十四烷、甲基丙烯酸缩水甘油酯、丙烯酸、碳酸二甲酯、60号全精炼石蜡、顺酐、苯酐、80号微晶蜡、甲基苯骈三氮唑、甲基丙烯酸、二月桂酸二丁基锡、精萘、硫脲、二茂铁、莫卡、邻苯二甲酸二辛酯、抗氧剂BHT501、亚磷酸
- 主营：切削液、改善油、热硅脂、润滑油、触点改、导热硅、测漏剂、一电子、除焊条、导热膏、三防胶、三防漆、散热膏、标记液、擦拭布、润滑剂、清洗剂、去除剂、遮蔽剂、粘合剂、浓缩液、散热剂、润滑脂、聚氨酯、稀释剂
- 主营：门轴、车修膨胀螺栓、活节螺栓、润滑油、不锈钢地脚螺栓、钢结构螺栓、高强度螺栓、法兰螺栓、卡缆螺栓、U型螺栓、开槽圆螺母、油堵螺栓、钢筋套筒、合页、垫圈、铆钉、销轴、内六角扳手、预埋板、焊钉、开口销、套管、方斜垫、双头螺栓、圆柱销、不锈钢螺栓
- 主营：质构仪、滴点仪、色度仪、粘度仪、粘度计、水分仪、硬度仪、四球机、密度计、自燃点仪、凝点倾点仪、闪点仪、馏程仪、沸程仪、油脂氧化稳定性仪、烟点仪、酸值仪、结晶点
- 主营：SKF 轴承、SKF 安装工具、SKF 轴承加热器、轴承润滑油、SKF 激光对中仪、INA轴承、SKF 油脂泵、各品牌进口轴承、FAG轴承、NSK轴承、进口轴承
- 主营：杜仲素、对位酯、丙烯酸酯、润滑油、二氧化硫脲、乙基麦芽酚、饲料添加剂、油酸基硬脂酸、二苯基硅二醇
- 主营：防冻液、冰醋酸、乙二醇、润滑油油精、冰乙酸、纯吡啶、丙二醇、羟基苯、14丁二醇、3-丙三醇、四氢呋喃、环保乙腈、化工苯酚、1.4丁二醇、医用苯酚、工业苯酚、精制苯酚、价位四氢、乙腈工业、乙酸乙酯、吡啶化工、甲酸乙酯、吡啶工业、求购苯酚、高纯三氯、实验乙腈
- 主营：真空泵油、真空泵维修保养、真空泵耗材配件、629合成润滑油、真空泵
- 主营：聚丙烯酰胺、聚合硫酸铁、聚合氯化铝、润滑油、葡萄糖、羧甲基纤维素、草酸、三氯异氰尿酸、卡松、edta四钠、磷酸三钠、消泡剂、硬脂酸锌、醋酸钠、edta二钠、工业白糖、尿素
- 主营：液压油、齿轮油、压缩机冷却液、长城润滑油经销商、润滑油脂出口、润滑脂、低温轴承润滑脂、高温轴承润滑脂、防锈油、导轨油、压缩机油、轴承油、柴油机油、冷冻机油、高真空硅脂、长城润滑脂授权经销商