Spark plug Autolite or AC DELCO

I now have the new plugs which are autolite gapped at .027 as it is suggested by autolite and also in the Bentley book.

The truck is currently using Autolite XP5245 iridiums. Normally I would go with something from NGK but I figured if the Autolites were a decent price I would get them and they would probably last the life of the truck

If its just painted like some cheap plugs such as some autolites then yes its needed.

Only use the factory AC-Delco 41-987 plugs.

autolites 3923 platinumsgave me the same mpg as the expensive NGK platinum.....

I have a poor running Audi in the shop now. While it needs more than plugs, it has autolites.

the autolites are bottom of the barrel, i've only used them once when i was young and dumb and ofc they busted while trying to repair and remove after.

Yeah, get rid of those: autolite is junk.

My dad just returned a set of autolites. I installed them and had immediate misfire.

Once we got a good local supplier for Motorcraft plugs a few years ago we almost never install Autolite.