Spark Plugs

[CJ007]

Anyone have experience with E3 Diamond fire or Bosch Platinum +4? If you have either, please post what engine/vehicle you have in and what you think.

 

[BusaDave9]

I have used four electrode plugs in a Mazda RX7 and platinum plugs a ford f150.

I have never used the Platinum +4 plugs. I don't like platinum plugs. I prefer copper. The only advantage platinum has over copper is that platinum lasts longer. You get better results with copper but you will replace them more often.

 

[CJ]

Here is a thread that discussed the E3 plugs (several links in the thread).

-->> http://www.jeep-cj.com/forums/f2/e3-sparkplugs-11446/

 

[PaRenegade]

I will never buy a Bosch spark plug as long as I live. I've had 2 friends who had Bosch plugs break (electrodes or insulator) and cause hundreds of dollars of engine damage. And even with the mechanic stating it was clearly the malfunctioning plug that was the cause, Bosch refused to back up their product and pay for damages. I guess their mechanics could tell better from several hundred miles away than could the mechanic who actually tore the engine apart!!

 

[CJ007]

Looks like most seem to have decent results with the E3 based on the links. They also seem to come up as better emissions on some other searches I've done. I'm going to give them a try.

 

[BusaDave9]

I've had 2 friends who had Bosch plugs break (electrodes or insulator) and cause hundreds of dollars of engine damage.

I have heard similar stories about Bosch plugs.
Avoid Bosch!!!

 

[dalefan88]

i got E3 in my 79 CJ5 with a AMC 258 i6 / 4.2l and my 03 accord 2.4l and love them. bosch are junk.