Pre-gapped spark plugs

[440Magnum]

Originally Posted By: artificialist

My 2003 Saturn ION had severe gap erosion at 60,000 miles with AC double platinum plugs.

My dad's 2007 Pontiac G6 had close to zero gap erosion after 80,000 miles.


So that just proves that the Pontiac emblem on the hood prevents plug erosion. Or maybe you proved that plugs never erode in cars made after 2005. Or maybe its that the Saturn emblem causes the erosion.

Seriously, if you saw different behavior in the SAME engine, then it would prove something about the plugs. But with the above information, you've changed several variables so you cannot say which one caused the different observation.

 

[artificialist]

They are both Ecotec engines, that is why I mentioned the 2 vehicles.

 

[440Magnum]

Originally Posted By: artificialist
They are both Ecotec engines, that is why I mentioned the 2 vehicles.


Understood, but there could still be a lot of differences. Different programming, different ignition systems, something wrong with one and not the other, etc.

That's why I'd really want to see both plug types used in the exact SAME engine, not just the same model engine from two different years.

 

[beechcraftted]

Well, I see Bosch is not favored here, but my Dad has 54,000 miles on some Bosch Platinum 2's in his Caddy Northstar V-8. Starts and runs perfect...27 MPG on the highway. No issues in the Northstar V-8. Pre-gapped, installed them right out of the package.