See also:

Recommended grade and viscosity
Each oil manufacturer has its own base oils and additives. Never use different brands together. For details, refer to “Manual transmission, front differential and rear differential gear oil”. ...

All new gearbox and Boxer engine
UK versions of the Subaru Impreza will be powered by an all new 4-cylinder 1.6 litre Boxer petrol engine and will be available with either a new five-speed manual transmission or Subaru's Lineartr ...

Symmetrical All-Wheel Drive: key to Subaru's Brand identity
Subaru will offer two different Symmetrical All-Wheel Drive systems in the new Subaru Impreza. In models equipped with the five-speed manual, the Continuous AWD system uses a viscous-coupling to d ...