Driving Tips from GM

I must admit this is slightly biased towards one dealership but  have been dealing with Preston’s in one way or another since 1968. Each month I get a monthly magazine from GM called “Main Street Car Keys” and except for the Preston add, has nothing to do with GM cars, it is an interesting read on automobiles for the non-techy auto enthusiast who, probably like me, doesn’t know how to change the oil.