The recommended engine oil for your car is actually a 5W30 fully-synthetic. That goes for either the petrol or diesel-engined version of the Q5. The recommended Audi Q5 engine oil is a fully synthetic ...

A rack and pinion steering system consists of a pinion (a circular gear) with a rack (a linear gear). The system works by converting a revolving motion into linear motion. Most cars, small trucks, and ...

Rack and pinion steering is commonly used in modern vehicles to facilitate steering control. It involves a gear assembly consisting of a rack (a straight bar with teeth) and a pinion gear (a small ...

Rack-and-pinion steering is somewhat different from the steering boxes we looked at in last month's issue. Perhaps the best way to describe it is that it combines the steering box and tie rod, or ...