[scoobytuff]

If your going to clean connectors there are better cleaners than WD-40 I will agree to that. The dielectric grease on the other hand is what comes in your spark plug boots from the manufacturer. I have personally used WD-40 on the wires of several vehicles I have had, and I have owned 70 different vehicles so far. It has never causes the spark plug wires to swell (just my pesonal experience). The wire drier I'm sure is better no doubt, I used WD-40 because it was readily available and I was usually in a bind to get a car running right again. My point, the connectors should probably be cleaned and dried (with whatever works best) and should definately be repacked with dielectric grease.