Well, it looks like Im getting a puff of smoke at startup. Doesnt seem like there's anything funky with the oil, or coolant to signify a head gasket. My take is its probably the stem seals dripping a few drops of oil. So, if it were you, would you- 1. Keep driving it 2. Get it fixed 3. Look at it as a great way to upgrade the motor. I've got a powertrain warranty on it , so its a great time to use it. Truck still seems to have plenty of power, but I guess could always use more! But if I dont have to have any downtime, that would be even better. What do you guys think?