Spark plug NGK or OEM Mazda

If you want relatively inexpensive and decent look up whatever NGK plug is correct for your car.

I find the car runs way better on the Rutheniums, and I find that the plug gap doesn’t open itself up over time like it was with 6510s.

I went NGK and noticed a small bump in throttle response, changed mine at 100k Km (60k miles) and they were honestly good to throw back in too, so not like the plugs were burnt or fried!

I’ve been running NGK Ruthenium plugs on my stage 1 GTI for 20k miles. No issues.

NGK. I'm a believer after using them.

Went and bought the NKG plugs and the problems went away.

Most definitely still recommend! they are great, I usually replace every 50k due the stress I put my car under, but they can go a little more than that

NGK coopers for the coil pack Jeeps. Mines an 00 and have ran champion and NGK. NGK are doing alright in mine

Yesterday my new Ariens made its maiden voyage up here in Maine and began misfiring under load. Called the dealer where I bought it and they said it may be the spark plug. Ariens apparently puts cheap Chinese plugs (Torch brand) in their machines. Long story short, new NGK and all is well. Powers through them berms like a pro.

after putting the new ones i changed all the spark plugs too, to fit them properly with new wires. but the car runned roughly, so bad..and when mechanic unscrew the new spark plugs to see, they were carbonized black, with just a ride around.