On the way home today I notice white smoke coming out of my exhaust: for only brief moments at a time. Then after a few minutes the white smoke disappeared completelly. The truck did not overheat at any point nor did the temperature fluctuate. I believe that the culpret is my head gasket. A few weeks ago I swiched over to synthetic motor oil, And ever since then I have had some oil leak out around the head. Is it save to rule this out as a worn or faulty head gasket. What else should I consider. Thank you for your help. I want to buy new ARP head studs/bolts and a FEL-PRO head gasket kit. Are they worth it.