I've been driving my 01 S-type for a while and the car runs/drives great but it has about 87K miles on it. Considering the fact that the previous owners most likely didn't know crap about cars I've been doing some fixes/upgrades lately to the car. I have been to a few autoparts stores and nobody can tell me what comes factory in this car for plugs.

I would figure Motorcraft platinums (ford influenced Jag) but I can't find a definitive answer to that.

So do any of you guys know what comes in the 4.0L V8 factory? or do you have any suggestions on what plugs to run? NGK's? Autolite?

Thanks!

 

They are NGK but you can get same plug from Ford dealer.

 

Check www.clubplug.net