SAE 75W-90 gear oil is the recommended lubricant for most 5-speed manual transmissions. This type of oil is formulated to provide the proper viscosity and protection for the gears and bearings in the transmission. It also contains additives to help prevent corrosion and wear.
SAE 80W-90 Gear Oil
SAE 80W-90 gear oil is a thicker oil that is sometimes recommended for use in 5-speed manual transmissions that are operating in colder climates. This type of oil provides more protection against wear and tear at low temperatures.
Automatic Transmission Fluid (ATF)
ATF is not recommended for use in 5-speed manual transmissions. ATF is a lighter oil that is designed for use in automatic transmissions. It does not provide the same level of protection for the gears and bearings in a manual transmission.
It is important to use the correct type of lubricant in your 5-speed manual transmission. Using the wrong type of oil can cause damage to the transmission.