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Gear Lubricants, Multipurpose (Extreme Pressure Gear Oil)
Specification: IS : 1118:1992
 
 
Scope

This standard prescribes the requirements and methods of sampling and test for the various types of multipurpose automotive gear lubricating oils (extreme pressure (EP) type)

The lubricant is primarily intended for use in automotive hypoid gear units, manual transmissions, final drives, steering gears and fluid lubricated universal joints of automotive equipment.

This standard may involve hazardous materials, operations and equipments.  This standard does not purport to address al of the safety problems associated with its use.  It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
 
Classification
Types
The oils qualifying this standard shall be classified as Extreme Pressure (EP) oils under one of the following two types:
 
Viscosity Grade
The oils shall conform to one of the following six mono-viscosity grades as distinguished by the prescribed viscosity limits:
1 SAE 75 W
2 SAE 80 W
3 SAE 85 W
4 SAE 90  
5 SAE 140  
6 SAE 250  
 
The oils may also be multi grade combination of a ‘w’ grade with another monograde component, for example, 75W-90, 80W-90, 85W-140, etc.  In such a case oil shall comply with the requirements of the ‘w’ grade component in full as also the viscosity at 100°c of other component grade.
 
Approved performance Tests

The tests for performance evaluation of oils are summarized below:

Type of Oil Test Hi-point APG
EP type GL-4 (i) shell four ball rig test
 
 
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