Technician A says that API GL-6 lubricant supercedes GL-5 and should be used in all current differential carriers.Technician B says that API GL-5 is extreme pressure (EP)rated for use in hypoid gearsets.Who is correct?

Question

Quizplus · Accepted Answer

Technician B is correct because API GL-5 lubricant is indeed extreme pressure (EP) rated and designed for use in hypoid gearsets, which are commonly found in the differentials of vehicles. Technician A is incorrect because there is no API GL-6 specification; the API GL-5 is the relevant specification for such applications.

Technician a Says That API GL-6 Lubricant Supercedes GL-5 and Should