What gear oil should be used for a BMW Z3?
For the BMW Z3, BMW recommends using BMW Manual Transmission Fluid MTF-LT-3 or an alternative that meets the BMW MTF-LT-3 specification. If you are unable to find BMW MTF-LT-3, you may use 75W-90 GL-4 manual transmission fluid as a temporary replacement. However, it is important to note that using a fluid that does not meet the BMW MTF-LT-3 specification may affect the performance and longevity of the transmission. To ensure the proper functioning of your Z3's transmission, it is recommended to use BMW MTF-LT-3 or an equivalent that meets the BMW specifications.