R RyanDinkler New member Joined Jun 19, 2013 Messages 1 Reaction score 0 Points 0 Jun 19, 2013 #1 I have a 2004 gmc Sierra 1500 8 CYL 5.3L and I wanted to know from people who have done it, which one adds more MPG? Posted via Topify using iPhone/iPad
I have a 2004 gmc Sierra 1500 8 CYL 5.3L and I wanted to know from people who have done it, which one adds more MPG? Posted via Topify using iPhone/iPad
