Tire chains
Tire chains cannot be used on your Impreza, WRX and STI because of the lack of clearance between the tires and vehicle body.
See also:
Checking the clutch function
Check the clutch engagement and disengagement.
1. With the engine idling, check that there are no abnormal noises when the clutch pedal is depressed, and that shifting into 1st or reverse feels smoot ...
Recommended grade and viscosity
Use only engine oil with the recommended grade and viscosity.
Refer to “Engine oil”.
NOTE
Engine oil viscosity (thickness) affects fuel economy. Oils of lower viscosity provide better fuel econ ...
Manual tuning
Turn the “TUNE/TRACK/CH” dial clockwise to increase the tuning frequency and
turn the “TUNE/TRACK/CH” dial counterclockwise to decrease it.
Each time the dial is turned, the frequency interval ca ...