Spark plug OEM BMW or Motorcraft

The tools aren’t expensive. Yes I use dielectric grease but not anti sieze on the threads (only because BMW orders us not to). Easy job for most cars.

I also put Motorcraft new plugs back in. Truck is happy. I'm happy.

I have about 30k on my plugs (Motorcraft OE). I've no problem buying them again as they've held up great

use BMW OEM plugs from the dealer. Yes the are expensive but I have never had a problem with misfires and I've put over 100,000 miles on my current E36 and over 150,000 on my first. While they are suppose to work and be interchangeable according to the manufacturer the NKG you buy aftermarket are supposedly different than what you get from BMW

Oem Motorcraft plugs are always my go-to. They generally last around 80k miles.

Modern Ford engines tend to work best with Motorcraft or NGK spark plugs.

I heard from an old ford mechanic once that ford designed their ignition system around the motor craft plugs and no other brand plug will run right if installed. Since then only motorcraft or autolite in my fords.

I just completed my first spark plug change on my G20 330 at 40k miles. Three of them especially Cylinder 1 came out "wet" and I'm unsure if it's oil.

That's better than the Motorcraft plugs I received from Rockauto. They were bouncing around (no longer in their original little boxes) in a large shipping box with 2 sets of brake pads.

Iridium plugs suck on fords.