Guys is there any solution to reduce the knocking in Vitz?
I have 2005 vitz which does a lot of knocking and i have to put a lot of hi-octane in it on every refill.
What is octane booster and does it work?
Also i noticed sometime the engine check light comes on if i push the car a bit with a cold engine. It sometimes comes on and sometimes it does not. The car is running fine and you cannot feel anything wrong in the actual running. Is this normal or do i need to check some stuff?