I saw a posting here a while ago regarding plugs, and specifically the Bosch 4 electrode type, where there is a grade available for the Impreza Turbo? The posting was from a guy in the U.S. Has anyone here in the U.K. tried them, and if so, how did they perform? I`ve used them on other cars in the family and they seem good, but changing plugs on a Scoob is not a five minute job, so anyones experience is most welcome!
JohnD