Modification of your vehicle
Your vehicle should not be modified other than with genuine SUBARU parts and accessories. Other types of modifications could affect its performance, safety or durability, and may even violate governmental regulations. In addition, damage or performance problems resulting from modification may not be covered under warranties.
See also:
Driving tips
Do not drive with your foot resting on the clutch pedal and do not use the clutch to hold your vehicle at a standstill on an upgrade. Either of those actions may cause clutch damage.
Do not drive wit ...
Recommended shifting speeds
The best compromise between fuel economy and vehicle performance during normal driving is ensured by shifting up at the speeds listed in the following table. ...
Maximum allowable speeds
The following tables show the maximum speeds that are possible with each different gear.
Never exceed the speed limit listed in the following table for each gear position except for brief acceleratio ...