slackattack

Has anybody used the E3 Diamondfire spark plugs in their truck? I have heard they don't require being gapped and they have a hotter spark which should help burn the air/fuel mixture better. Should I try them out or stick with Motorcraft spark plugs?

tritonbullet

Never saw them as listed option for triton 3v

chunks7mm

they do make them,snake oil i tried them on the tundra i had and not a difference at all....motorcraft sp-515 is the way to go

MGD

^^^ X2.

OP - save the headaches - go with MC SP-515's.

MGD

jkenprice1

x3

noticon75

I have tried E3's and they are junk not worth even thinking about using!

powerranger262

Mod (Ret.)

I read that they were designed for lawn mower engines to help reduce pollutants from the tons of lawn mowers out there. Then they (the company) figured that they could be sold for automotive use. They sponsored a drag race team, and starting selling them for automobiles. A lot of advertising stating they add HP and gain better fuel mileage.

This is another one that has to be decided by the consumer. For me, I'm staying with Motorcraft. The current plugs got me to 100K (2007 4.6), so why change from success?

bwFX42006

Please forgive the stupidity of my question....but do you have to gap motorcraft SP-515's?

johnny_tucson

nope.