Montero 4WD V6-2972cc 3.0L SOHC (1991)
Fluid - M/T: Technical Service Bulletins
M/T - Fluid Recommendation/Caution
DATE: April, 1993
MANUAL TRANSMISSION/TRANSAXLE GEAR OIL
The manual transmissions/transaxles in Mitsubishi Motors vehicles require the use of API GL4 classification gear oil. Using an incorrect API
classification gear oil may affect the shift effort and may cause transmission/transaxle component damage.
Use only gear oils having the API Classification GL4.
Mitsubishi Diamond Gear Lube - A991ZC2X01 - SAE 75W - 85W GL4, meets this requirement.
Do not use gear oils having an API GL5 classification. GL5 oils have additives which may chemically react with sintered copper synchronizer rings
leading to manual transmission/transaxle damage.