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.
use BMW OEM plugs from the dealer. Yes the are expensive but I have never had a problem with misfires and I've put over 100,000 miles on my current E36 and over 150,000 on my first. While they are suppose to work and be interchangeable according to the manufacturer the NKG you buy aftermarket are supposedly different than what you get from BMW
I bought NGK-94833 spark plugs from FCPEuro for my 2015 Jetta with the 1.8T.
I run NGK iridiums in my vehicles due to them being turbo/supercharged.
Stick with NGK for plugs, its the OE manufacturer, Bosch or Denso are good second choices. Never touch autolight or champion
Previously done NGK Plugs, (PLEASE RECOMMEND ME A GOOD ONE)
On my stage 2 mk7 I swapped around and tried a few like ngk and the ngk failed causing misfires like crazy on acceleration. Back to OEM and never had another issue for 45k miles.
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