Abstract: A manual transmission fluid was developed using self-prepared additives. Its antiwear and friction performance were investigated by SRV testing machine. The wear scar surface was analyzed by three-dimensional topography. The results were compared with reference oil. Finally the synchronous durability of reference oil and developed oil was verified by SSP180 bench test. The results show that the friction behaviour of the developed oil under selected SRV test conditions is correspondence with synchronous durability. The oil with high and stable friction coefficient（>0.115）, small and smooth wear scar (average wear scar diameter below 0.45mm) can pass SSP180 synchronous durability bench test(cycle 100000 times).