View Full Version : Need plugs for LQ4

11-15-2009, 12:36 PM
Hey guys I'm in the need to change the plugs in my truck. The truck is a '06 2500HD Silverado. I just got 65K miles on it so I need to do some maintenance on it. I was looking for advise on spark plugs for these motors. Also what do I need to gap them at? Thanks

11-15-2009, 12:38 PM
I put some NGK TR-55's in my 5.3L Silverado Gapped at about .048". Actually picked up some MPG's.

11-15-2009, 01:09 PM
What rtr2001ss said.

11-16-2009, 07:29 PM
Thanks guys. Hey I see guys using anti seize on plugs. This is new to me. Do you just rub some on and thread it in? Is it really needed?