What r the best spark plugs to get better gas milage on a 2005 cad ext, and can they be replace from the top?
Sunday, March 13th, 2011 AT 1:10 PM
In my opinion, you are going to get the best performance, and economy, with the plugs the vehicle was manufactured with. Others may claim improvements, and I think that is just a catch to get you to purchase their product. You can get them from the top, the rh rear plug(#8) is going to be the most difficult. Often times the plug wire boots can be a bit of a struggle to release.