hi. i thought this would be easier than searching through tons of threads but i just bought a can of seafoam and i want to know where and how to "inject" through the by pass valve i've heard so much about. i'm just about to do my first oil change on this car and thought this would be an added bonus.
also, would it be a bad idea to switch to synthetic oil with my car having 110 kilometers (68750 miles appr.) i live in canada where it gets very cold in the winter.