I have an 03 GMC, when we first bought it it also smoked at idle. With this new fuel, the engines on our machines at work with start smoking and loading up and I found a mixture of Howes fuel additive- double dose and a double dose of Lucas fuel treatment would clean them up. I tried this on my...
Hi everybody, found your site and decided to join. I drive two trucks with Duramax in them 2005 5500 crew cab 4x4 Kodiak-work and a 2003 2500 crew cab 4x4-mine. Hope to some info here with you. Thanks