Spark plug NGK or OEM Subaru

Spark plugs I put in it 15k miles ago were NGK 7968 Laser Platinum

I'm guessing they have been in there for 175k? NGK for the win.

I decided to try out NGK Ruthenium, and it runs just as good if not better. Ruthenium is much newer technology and is supposed to be able to ignite a larger range of AFR's leading to better throttle response compared to good old iridium.

I use NGK BKR6EKPA and NGK PMR7A for my 147 2.0TS

In my '16 sport I use NGK Iridium IX. I've run these in every Honda I've owned since the 90s.

Ive used the 92274’s in about 15-20 fb builds and great so far

The easiest way to know if NGK plugs are real or fake is test them for resistance.

Yesterday I went to get my stock spark plug changed with NGK's iridium spark plug along with the cable and resistor cap. It's a 150cc Yamaha FZ 2024, runs smoother now, throttle response got noticeably faster

I have a had a couple of NGK spark plugs with very fragile ceramic insulators over the last few years. I suspect like everybody else they are cutting on QC due to that inflation that officially doesn't exist, especially for made in Japan products.

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.