I noticed that E3 was advertising on the forum and wondered if anyone has had any experiences, good or bad, with the "gap less" type plugs?

 

I have a 4.2L and put e3 plugs in about 2000 miles ago and so far so good

 

I have not had any experience with E3 plugs but what I have seen is that the AC delco plug works just fine and depending on what those plugs cost they may just not be worth the extra money because they probably will not be any benefit.

 

Gentlemen, thanks much. You confirmed what I had begun to think.

 

I agree I stick with ACdelco!

 

I personally would like to know more about those new plugs, and any innovation which may give us better economy or performance...

 

My point is we share a lot of information here. My cost and benefits on a specific job or project with my truck may save someone else money.

I know I save a lot of moolah by seeing what others did, and what is and isn't working.

 

OK, one step further. Bosch makes a Platinum+4 and a PaltinumIR. I'm assuming the IR stands for Iridium ((which is what my Impala came with (Delco) from the factory)). Also the IR plug is $2.00 a plug more. Now me, I'll probably get the IR, but what's wrong with the Platinum+4? Comments?