Which spark plug brand have you had the best results with?

Question

Okay let us hear all of your spark plug war stories...

What brand is best and why?

What brand gave you no end of trouble...

Everyone has a right to express themselves.

So if AC Delco is a product of GM...

And Autolite is a product of Ford Motorcraft...

Does that mean Champion spark plugs are a product of Chrysler corporation?

Answer 1

Bosch Platinum, I use them on my 68' Camaro and my Maxima!

Answer 2

I rather use the manufacturers recommended brand of plug or autolite in any car... swapping plug brands sometimes messes with the heat ranges and can cause vehicle performance problems.

For example, On a Ford, I only use Motorcraft or Autolite .. Ford dealers will recommend not using Champion on them as sometimes the heat range issues with the plugs can cause hard starts etc (but champions work perfect on Chryslers)

Same thing basically on GM A/C delco or Autolite...

Answer 3

I had an 88' 5.0 mustang with a hi-performance engine. After trying many different spark plugs I have to say that the Autolites were the best. I ended up sticking with the platinums because the other ones were more expensive and didn't really perform any different.

Answer 4

I normally recommend using whatever the OE plug was. Why? Just because a plug from brand B fits in the whole, does not mean the specs are the same as the OE plug.

The only brand I really don't like are Bosch Platinums. These are the only spark plugs I have ever, in 20 years, seen just plain fail! I've also seen them make several cars - GM's in particular - run like absolute garbage.

Some fancy plugs, like Splitfires, are just so much snake oil so I don't bother.

Answer 5

The Denso part will always fit like an OEM part with Toyota's, Denso was after all a subsidiary of Toyota to begin with, and is still closely tied to them. NGK is for the most part generally equal quality wise, but I would go with Denso if you can afford it. There will be a larger gap in quality with the Denso/NGK wires than with the spark plugs. Go with platinum plugs or better. Don't use Autolite plugs in a Toyota, don't Autolite wires unless there is an extreme price difference that will break your wallet. I wouldn't wipe my *** with anything Autolite. I have seen Bosch plugs make Toyota's run rough. Not always, but when they come in running bad, and we find they have Bosch in them, most of the time changing them out to factory plugs fixes the problem. Note: NGK is in no way associated with Denso, although NGK is Toyota's secondary supplier of spark plugs after Denso.

Answer 6

It depends on the make of the car. I don't think nkg is the best for a chevy and I wouldn't use autolite in a honda. Check out a discussion thread on the particular car you need them for and see what others say specifically for the car. Certain cars don't like the dual tip kind because it messes with the amount of spark the computer is expecting to get and actually reduces performance.

Answer 7

I've never regretted replacing spark plugs with the same plug the factory put in the engine when it was assembled.
Stick with the 'exact' factory recommendation. Better yet, if you know that the factory plugs are still in the engine, pull one out and match it.

Answer 8

I work in a garage, and I use NGK, out of about 600 Spark pulgs i've used in the last 6 months, i've had 1 bad one. I run them in my truck, and have no problesm, In my opinion, I would either stick with dealer brand, or NGK, or Bosch. no name brands and Champion are complete junk, I have had many problems with them in the past

Answer 9

Auto Lite

Answer 10

Bosch platinum