Ill say this, i got a set of 6 high quality ngk platinun tips for like 60 bucks
I buy the NGK laser iridium spark plugs. About 100 dollars.
I decided to give the NGK Rutheniums a try earlier this year after reading about them on this thread I've been happy with them so far, the engine ran noticeably smoother than with the old plugs (but that could have also been simply due to new plugs).
I replaced mine last week and used anti-seize lightly. No problems that I see.
Replace the plugs with NGK or Denso.
I have the OEM RS7 plugs in my car for 40,000km ever since going to stage two with zero issues and will buy them again.
I bought NGK-94833 spark plugs from FCPEuro for my 2015 Jetta with the 1.8T.
Previously done NGK Plugs, (PLEASE RECOMMEND ME A GOOD ONE)
Side note, Champion spark plugs suck. Use them in lawn mowers.
Get those plugs out! I bought counterfeit NGK plugs from Amazon. By the time you get a misfire the ceramic may have cracked off around electrodes and damage your engine.
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