Just did mine with ac Delco, gapped them in advance and running great!
Pros: running great
Owner reviews for spark plug
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In my personal experience (99 suburban 6.2l 383) AC Delco spark plugs are the way to go
Pros: good personal experience
Vehicle:
Chevrolet Suburban
I use Denso IK20TT and these spark plugs work every time, on both fuels.
Pros: reliable on both fuels
Vehicle:
Volkswagen Golf
NGK. I'm a believer after using them.
Pros: I'm a believer
My 2000 Ford Ranger with a 4-cylinder and manual is just about the simplest vehicle that could exist. SOHC engine, so not much that can go wrong in it. It's very satisfying to work on because you don't experience the shitty feeling of knowing you spent way longer on something than it should have taken.
Pros: simplest vehicle, satisfying work
Cons: spark plugs annoying to reach
Vehicle:
Ford Ranger
Went and bought the NKG plugs and the problems went away.
Pros: problems went away
No anti seize been about 15k miles runs great
Pros: runs great
Vehicle:
Lexus IS
Mileage: 24140 km
I've seen with a digital tachometer a 1,000rpm difference between a laser brand spark plug and the oem ngk spark plug in a chainsaw. So for me it's what the oem uses is what I put back in.
Pros: oem spark plug
Cons: 1,000rpm difference
I replaced the original ac Delco spark plugs (shown in picture, THEY LOOK BAD) and put with new auto light ones and changed the wire as well. However, after doing so, my truck has been running really rough, almost like it's cammed and misfiring, when its rolling in drive it like to have a little shake.
Cons: running really rough, misfiring
Replacing a motor is not fun, nor cheap. That was with 9006 RS7's btw (your current plugs).
Cons: groundstraps break
Vehicle:
Volkswagen Golf
Part number: 9006
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