Ok, so I am past my service date of replacing my spark plugs. Just curious on what you guys would recomend for new ones. I am leaning towards the E3s. Any kind of input would be greatly appreciated. Thanks.

 

Why not just use OEM, is there really a difference?

 

plenty of threads on this topic.
if worried about warranty (especially LT warranty) then go stock
if not, don't

 

I am not worried about warranty. I have like 2000 miles left on that. I am looking for something that I don't have to change again in 30000 miles.

 

I went with Platinums , changed them at 45,000 .. now have 100,000 + on them ..no problem

 

Do not use a 'pulse duration spark plug" which I think the E3s are. Some have used and had to remove asap.Will affect running and possable charge system. A issue with signal bleed over. Been some posts on having to remove this type plug. At first I thought BULL on a plug causing charge system issues as well as poor running. G.M. has a TSB explaining the issue. NOW back you what you can use. The FACTORY plug for the Caliper/Durango 5.7 Hy-bred is a Platiumn NGK 100,00 mile plug. At the moment dealer item only. Next is ANY Platiumn or Iridium long life plug of correct heat range etc. Best buy out there right now is AUTOLITE. I just bought 16 from Amazon.com for $6.81 EACH with a $32.00 mail in rebate from Autolite!Plug number XP5325. The NGK PLATS are $10.00 each. DENSO Iridium are $16.00 each. I called and talked to each ones TECH LINE including NGK. The DENSO and Autolites are vituraly identical. The Autolites don't mention mileage but say they are warrantied 5 years unlimited mileage etc. I found out about the Autolites and rebates I think on this forum a while back.