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”. ...

The Inside
The interior is quiet enough at idle that one time I didn't even realize it was running. That's when I recognized Subaru finally seems to have licked this engine's chronic idle vibration. In this ...

Uniform tire quality grading standards
This information indicates the relative performance of passenger car tires in the area of treadwear, traction, and temperature resistance. This is to aid the consumer in making an informed choice ...