gl等级是由美国石油学会 (api) 对齿轮油的api质量性能作出的划分，分为gl-1、gl-2、gl-3、gl-4、gl-5等质量等级，gl后面的数字越大，代表负荷级别越高。 现常用的有GL-4和GL-5两种。

Learn how GL-5, GL-4, FD1, and TO-4 gear oils differ and why choosing the correct spec is essential for maximizing vehicle performance and protection.

MasterPro Multi-Purpose GL-5 Gear Lubricant is a premium quality, heavy-duty, extreme pressure, multi-purpose gear lubricant. The additives selected for this lubricant meet the demands of low speed, high torque truck and construction equipment service.

2022年7月5日 · GL-4 gear oils are typically recommended for spur and helical gears found in manual transmissions and transaxles operating under moderate speeds and loads. GL-5 gear oils are typically recommended for hypoid gears in automotive axles operating under high-speed, high-load conditions.

GL-4属于中负荷齿轮油，适用于差速器齿轮、变速箱齿轮及转向器齿轮；GL-5属于重负荷齿轮油，适用于工作条件特别苛刻的差速器齿轮及后普：变速箱油用gl4还是gl5，齿轮油gl4和gl5区别桥齿轮。

2024年9月14日 · GL-5 85W-90是一款高性能的多级齿轮油，其粘度等级达到了85W-90的标准。 它遵循美国石油协会API的质量等级规范，GL-5标识表明其质量上乘，特别适合承担重负荷的齿轮传动任务。 在国内，我们采用SAE粘度分类标准来对车辆齿轮油进行粘度分类，涵盖了75W、80W-90、85W-90、85W-140、90以及140这六个等级。 其中，带有W字母的粘度等级意味着该类齿轮油适合在冬季使用，而不带W的粘度等级则更适用于常温和高温环境。 以80W-90为例， …

2023年10月28日 · Q. Is It Possible to Use Gl-5 Gear Oil in a Car That Requires Gl-4? Yes! you can, but you should not. Because Gl-5 gear oil is designed for use in transmissions and differentials that have Hypoid gears. These are the type of gears that you’ll find in most cars—the ones with teeth that are cut at an angle.

Flipping the coin of this discussion, we bring you the GL5 gear oil. It has an extreme pressure rating, which is one of the reasons behind its preference for high-speed and high-load applications. Its target is mainly hypoid gear in automotive axles. You may consider the GL5 a GL4 gear oil equivalent, though on a larger scale.

A traditional GL-4 gear oil of any given viscosity has about ½ of the level of sulfur/phosphorous additive that would be in the GL-5 product, so the bond is not as strong, and therefore can be peeled off without peeling a layer of brass (or less brass). This means that the GL-4 product provides a little less

GL-4: Best suited for manual transmissions with spur and helical gears under moderate speeds and loads. These oils contain a balanced amount of extreme-pressure (EP) additives. GL-5: Made for hypoid gears in automotive axles, which operate under high torque, load, and heat. GL-5 oils contain about twice the EP additives of GL-4 oils.