See also:

Engine
...

Overview
Subaru of America introduced a new 4-door version of the Subaru Impreza WRX STI performance flagship model. This will be the first time that the Subaru Impreza WRX STI has been offered in two body ...

Gasoline for cleaner air
Your use of gasoline with detergent additives will help prevent deposits from forming in your engine and fuel system. This helps keep your engine in tune and your emission control system workin ...