I've been seeing a lot of posts from people saying you gotta run Motorcraft spark plugs. Why? Are they designed differently than the standard plug design?
I've always preferred NGK, but more specifically I really prefer anything using copper. I want nothing to do with platinum or iridium unless running a capacitive discharge (MSD type) ignition system that uses multiple sparks per fire.
My reason for copper- one of the best conducters of electricity.
My reason for not using platinum or iridium...- one of the worst conductors of electricity. Also from experience, almost every vehicle I've owned I tried platinum plugs thinking I would be "upgrading", but the idle suffered every time. What I mean is with the car in drive, foot on brake, stopped at a traffic light the car feels rough and randomly misfires ever few seconds. To prove my point I replace with copper plugs and it idles perfectly, so much smoother that you don't feel it running at all.
But besides idle, there's probably no other difference, the platinums and iridiums last 100,000 miles +. The coppers only last 12,000.
I'd still rather clean and regap every 12,000 or just replace at $1.78 each, than spend $10 each and have rough idle for 100,000 miles.
BUT what about the motorcrafts? Are they copper/nickel or platinum, or just fit better or what?
I've always preferred NGK, but more specifically I really prefer anything using copper. I want nothing to do with platinum or iridium unless running a capacitive discharge (MSD type) ignition system that uses multiple sparks per fire.
My reason for copper- one of the best conducters of electricity.
My reason for not using platinum or iridium...- one of the worst conductors of electricity. Also from experience, almost every vehicle I've owned I tried platinum plugs thinking I would be "upgrading", but the idle suffered every time. What I mean is with the car in drive, foot on brake, stopped at a traffic light the car feels rough and randomly misfires ever few seconds. To prove my point I replace with copper plugs and it idles perfectly, so much smoother that you don't feel it running at all.
But besides idle, there's probably no other difference, the platinums and iridiums last 100,000 miles +. The coppers only last 12,000.
I'd still rather clean and regap every 12,000 or just replace at $1.78 each, than spend $10 each and have rough idle for 100,000 miles.
BUT what about the motorcrafts? Are they copper/nickel or platinum, or just fit better or what?