Should I buy this??? HELP ASAP!!
 

2006 F150 4X4 LARIAT, This truck looks like its never been sat in, not a scratch on the outside either, absolutely perfect. Has 86,000 for $18,900. My only concern is that there is a very slight knock?? I dont even know if it is a knock but its at least a very slight noise when warm at idle. Clean Oasis report, clean CarFax, always maintaned at dealer. What do ya'll think? Run? Or buy this truck. I need to trade my 6.0 powerstroke in ASAP before the thing explodes so help me out here.

A knock at idle while warm can be from mechanical issues or due to fuel leaning issues with bad injectors, etc. Before you buy, take it to a trusted mechanic for a once over and use their recommendations.

I bought it! Truck runs great and is in MINT condition. The tick/slight knock is slightly a concern but everything I have read seems to be quite common. I am going to try some seafoam or other injector cleaner and change the oil to a synthetic and see if it helps. What are yall's thoughts on going to a 15-40, or a 5-40 synthetic?

Stick with the manufacturers recommendation. 15-40w is a bit too viscous. Synthetic is good though.

Well first of all congratulations for the truck... I think the 15-40 is the good one performance wise. Anyhow you haven't shared any photo of your truck. Please share some good photos truck interior and exterior.

Anyway to do it from an iPhone?

yes, post pics of your new ride pls