When I start up I get lots of white smoke. Lasts about ten minutes of running, then disappears. Don't seem to be burning much oil. '03 with 18K miles. Friend suggested a leaking gasket or some sort of oil seal which expands as it warms and stops problem. My questions are these; a) how bad is it, b) can it be "simply" fixed by my very scanty mechanical skills (I can turn a screwdriver and wrench but not much more, c) does it have to go to the dealer/mechanic, and finally, d) what happens if I continue to ignore it, will it get much worse? Otherwise, everything else seems to work just fine. Last complete fluid change was 1000 miles ago. Thanks, in advance for any help.