Cadillac Seville / Cadillac Eldorado Forum Discussion, Plug wires - too obsessive in Past Cadillac Vehicle Discussion; I have the original plug wires on the '99 STS. That means they are 13 years old now. Plugs were ...
I have the original plug wires on the '99 STS. That means they are 13 years old now. Plugs were replaced at 85k. Would you replace plugs wires based on age? I'm not noticing a miss or anything, just think it might restore a little efficiency that might be lost over time.
Thanks Chris. I usually compare OEM scheduled maintenance with Captain Barbossa's description of the Pirates Code, more like guidelines.
Some plug wire manufacturers offer lifetime warranties. If that were true, there would be no replacement interval.
I usually try to heed my cars' symptoms before I act, but some things sneak up on you.
There's two sets of ACDelco wires ... the cheaper set is made to compete with the aftermarket brands and isn't quite as good as the OEM set but i'd say they're still much better than other aftermarket wire sets
the one visible difference that the OEM wire set has is that the wires are numbered (i don't think the cheaper set has the numbering)
there are possibly other differences like materials used and quality control