Recommended for LSD oil for gearboxes containing LSD. If the LSD is in its own housing, such as in the rear-wheel drive BMW, we recommend OS250R.
OS Giken has released OS 7.2_GEAR oil as the FF version of OS-250R (80W-250) oil for FR, which is optimized for OS Giken's mechanical plate lock (Superlock or TCD). The new range of OS 7.2GEAR oils has a kinematic viscosity index of 7.2 at 100℃, which is thinner than normal. That is why it is a low viscosity gear oil that is unique compared to the competition and that allows both the LSD and the synchro rings in the gearbox to function properly.
The advantage is that the low viscosity oil is effective for the synchronization mechanism from the first use, making it easier to engage the transmission. Mixed with PAO-based ester, it creates a film on gears with high heat resistance and protection performance, and also improves high-temperature properties.
It is recommended to change the oil after 1 track season. Street use is possible but change oil before 10.000km. The racing additives which make it ideal for track use don't last very long.
