Need a little assistance.

Saturday morning, my truck through out some white smoke that had a bit of a blue tint to it.

Not sure what could be causing this. Its an '08 4.7 with about 43k on it. only mods are exhaust and CAI.

Has anyone else seen this?

I havnt been able to get it to do it again. No check engine light... its not throwing a code??

Could this be from unburned gas? Havnt changed my plugs yet (dealer / dodge recommends changing top bank at 30k.)

Any thoughts appreciated.