Spark plug Champion or Motorcraft

I use Champion in my 02. Never had any issues.

I’ve been running champion plugs for about 40k mi without issue.

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

I used champion spark plugs.. no problems here

I have a Champion 20 Ton model with the 196cc engine. I have used it for 5 years, splitting about 35-40 cords. The only issue I have had is I had to replace the spark plug once. The engine still works well but just in case I bought a direct replacement Power Fist Chonda engine for $229 CDN.

Has anyone tried the Motorcraft SP594 plugs? They supercede from the SP542, which is said to be a 1 step colder plug for our cars. Currently running NGK 6510s but i think i got a "fake" set as i paid like $30 from Amazon for them. The SP594s I can get for $41 from Ford... so anyone have good results?

Iridium plugs suck on fords.

Champion spark plugs are rubbish, not sure why they’re even sold.

I quit buying Champions 40 years ago for shitty quality.

Champion is garbage.