What grade oil should be used in manual transmission gear box?
What grade oil should be used in manual transmission gear box? Basic automotive gear oil specifications in both Europe and the USA are the API GL-4 for manual gearboxes and GL-5 for final drive axles. What type of fluids can be used in a manual transmission? Commonly recommended manual transmission fluid formulations include SAE 80W, 75W-90, 80W-90 and SAE 90. In some cases, a multi-grade engine oil or automatic transmission fluid may be recommended. However, a manual transmission fluid is typically the most optimal for manual transmissions. What kind of oil does a manual transmission use? Manual transmissions use a...