77 Lubricants Autogear Oil GL-1 140

77 Lubricants77 Lubricants Autogear Oil linegear and transmission140

Mineral SAE 140 API GL-1 gear oil without extreme-pressure additives for manual gearboxes and axles of older design.

Classification
Product line 77 Lubricants Autogear Oil 22 oils
SAE viscosity 140What SAE means
Base oil mineral
Intended use gear and transmission
API class What API means
Typical properties
Viscosity at 40 °C 420.1 mm²/s
Viscosity at 100 °C 28.9 mm²/s
Viscosity index 95
Pour point -15 °C
Flash point >201 °C
Density 903 kg/m³

Description

77 Lubricants Autogear Oil GL-1 140 is a single-grade mineral SAE 140 gear oil without extreme-pressure (EP) additives. It is intended for manual gearboxes and rear axles of older design where the equipment maker calls for an oil of exactly this level.

It is rated API GL-1; the maker claims no vehicle manufacturer approvals and no compliance with other specifications.

Typical figures: viscosity 28.9 mm²/s at 100 °C and 420.1 mm²/s at 40 °C, viscosity index 95, pour point -15 °C, flash point above 201 °C.

Application

Manual gearboxes and rear axles of older design for which the equipment maker specifies an API GL-1 oil without extreme-pressure (EP) additives.

Worth knowing

The Autogear Oil line has three 85W-140 oils of very similar viscosity: EP, MP and TDL have 27.3, 27.7 and 28.6 mm²/s at 100 °C against 28.9 mm²/s here. But their data sheets claim API GL-4 or GL-5, that is, classes for oils with extreme-pressure additives, whereas API defines GL-1 as an oil without them, so similar figures do not turn any of the three into a GL-1 oil. The oils of this class have their own page, API GL-1, and there are only three of them.

Under SAE J306, a 140 with no W sets only a viscosity range at 100 °C, 24.0 to 32.5 mm²/s, with no cold limit; for 85W, the winter part of the 85W-140 designation mentioned above, the standard also sets a limit of 150,000 mPa·s at -12 °C. Apart from the pour point, the data sheet of this oil gives no low-temperature measurements. Where GL-1 sits among the API categories and why API regards it as no longer in use is covered in the article on gear oil categories from GL-1 to MT-1.

Data current as of Check the label and the current product data sheet before you buy.

Sources

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