I picked up a 2008 v6 sport about a month ago.
It has 40,000 miles and seems to be in great shape.
I changed the oil a few days ago and used mobil 1 extended performance along with a mobil1 filter.
Ever since the oil change I am getting a noticeable puff of smoke when I start it up every once in a while.
I dont remember seeing that before the switch, wondering if I should go back to regular oil or maybe 50/50 mix.
Should I be concerned and change to a different type of oil ?
any ideas why that would be happening ?
Don't freak out man? I sense more than a bit of undo paronia offered.
As far as sludge from "sitting" or lack of oil change.
Was there any sludge in the bottom of the pan when you drained the previous oil? I doubt it.
Does your fresh oil look contaminated not sludge its detergent action would have on any sludge buildup? Again, I doubt it. If it does change the oil and filter again.
General speaking a puff of blue oily smoke would indicate worn valve guiides. Something else I doubt.
It is possible that the engine sat without being turned over for a long period of time and the the cylinder chamber dried out of all lubricant. This could result in the piston rings slightly etching themselves into the cylinder walls thereby creating a microscopic "valley" for a slight be of oil to rest in. Which could result on a bit of a puff on startup after sitting a bit. But this would likely have no long term I'll effect unless it was severe.
A internal combustion engine is basically a big self-propelled air pump. Thus, it squeezes (compression ratio) the air which results in the moisture condensation once an engine is warm this moisture re-vaporizes while passing through the exhaust system. Are you experiencing this condition in cold startup situations?
You haven't said where you live but keep in mind the level water vapor visible while be directly related to atmospheric conditions particularly temperature and humidity.
In my experience new owners of equipment and machinery tend to look for and imagine problems.
Maybe it's left-over or lingering human survival instinct from the predator days. Early humans used to needed to be cautious on not being eaten by a tiger or such. We have to be equally concerned about surviving the freeway. The condition of a vehicles thus become a survival concern and we respond to any hint of an mechanical issue as a rabbit would respond to the sound of a pine cone falling behind them.
