hi, my name is kate, i have a white impreza awd turbo (facelift not blobeye) that i love, ive had it for three years now and she is getting old, i love my cars but im no mechanic altho im perfectly happy working on them if its something i know what to do. i would like any suggestions on how to 'spring clean' its engine a bit, its just not running as great as it should, its had a full oil change very recently but what else can i do to basically bring it back to its former glory, any suggestions and advice will be gratefully received, thanks