SAE 90 : They are high-featured mineral-based gear oils developed for all kinds of vehicle transmissions, gearboxes and differentials operating at low pressures.
API GL -5 : In hypoid gears with shock loading and operating under very heavy service conditions.
SAE 90 API GL-5 INDUSTRIAL GEAR OIL
The formula and manufacturing technique of the engine oil, which is produced by going through various reactions of multiple raw materials, can be found in the prepared pdf file.
* Process additive detailed list.
* Process temperatures and additive amounts.
* Processing time, detailed details.