Spark plug NGK or AC DELCO

Ignition system overhaul (spark plugs, wires ignition coils), a new starter like the one on amazon is a nice bandaid.

I just tossed some oem NGKs for the first time since... 30k miles, and they seem to be the best plugs I've ran, although they are not a step colder as recommended.

I ordered (from Rock Auto) some NGK spark plugs (#95463) advertised as being "OE Series." This supposedly means they are built to match the OE specifications.

I just replaced the spark plugs on my 2014 Cadillac ELR(essentially a gen 1 volt). My ELR has 81000 miles on it. It still had the factory plugs. One of the plugs was leaking compression as seen in the photo. If you have a first gen volt or an ELR, if the plugs have never been changed, it won't hurt to take a look at them. I replaced them with NGK 94279 spark plugs.

My wife has a 700ckx Heritage 2022 model. She has been riding for over 20 years. Bought this bike because of seat height and price point. Used almost every day for commuting. She just hit 40k's with no issues. We did change the plugs for NGK and swapped out the pipe. Also added a Scott's oiler for the chain. She loves it.

NGK Iridiums are what I run and never had a problem

If you’re asking about brands, I always go NGK. They’re definitely my preference. They have a coating on the threads and don’t require grease when you install. And they come pre gapped.

NGK !!!

So, I changed spark plugs in an old Ford Focus 2001. And currently there's no way I can get the original Motocraft spark plugs, so I bought and installed the NGK ones which are supposedly compatible with my vehicle. I used them a week, but since the start I noticed great differences in size in the threads and in the shape of the head. Is this a problem?

Bought these exact plugs recently and had the same problem- tip doesn’t unscrew- had to return them.