Most of my guys like to go with NGK plugs
That’s hilarious I just swapped the exact same plugs this morning in my Lotus, cheapies for iridium, what a difference.
The new NGK spark plugs do not need anti-seize per NGK. The anti-seize is already in the metal.
So the BKR7EIXs are in and gapped to .028. Man what a difference. Everything is so much smoother and the engine doesn't feel strung out anymore.
Replace the spark plug with a genuine NGK plug.
I always get the oem brand because that works the best for your car. I get NKGs for my vw beetle
Iridium, tried and proven. Ruthenium looks like is an experiment by Ngk, I would give ti some time before these plugs prove themselves reliable before buying.
Another plug to give a try if you want to stay stock heat range - NGK's Ruthenium plugs LFER7BHX . Call it a placebo effect but after install cold start idle sure felt smoother and after 4000 miles they're running as good today as day one, gas mileage has been pretty good as well around 31 mpg +-1mpg @ 75mph. No cold start misfires. Overall a pretty solid plug for this engine and it's reasonably priced.
Today I replaced the spark plugs with new ones PFR7S8EG VW genuine. With new plugs car runs better, but idle still wasn't good enough.
I put in NGK PFR7S8EG plugs and man the car ran like absolute CRAP when it was cold. It ran fine, even great when it warmed up but it was so bad when cold that it was virtually un-driveable especially under moderate or hard throttle. I ended up putting the old plugs (Bosch platinum/iridium) back in because it was so bad.
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