Manual Transmission Gear Oil

We are still hearing about some complaints about gear clash (grinding) during shifting. Remember that the only Subaru approved gear oil Part Numbers are as follows:

K0324F0091 For Justy Models
K0324AA093 For All L-Series, XT and Legacy

We recommend using these gear oils first before performing extensive internal repairs, synchronizer, drive, driven gear replacement.

NOTE: Though these gear oils carry the common GL-5 specification don't be fooled. They are specially formulated using different additives that are different from domestically sourced gear oils.