Gary, there are two kinds of oil canning, a loose oil can caused by shrinking (usually a result of welding) and a tension oil can where a dent or glancing crease causes a stretch, pushing tension into adjacent areas of the panel that may result in a bulge that can be pushed back and forth, only this time, requiring a bit more force than the loose oil can. Given one is caused by a stretch and the other by a shrink, the repair depends on the cause.


If yours was caused by welding, then you should have a loose oil can, fixed as indicated above. Try to keep from introducing any more heat in whatever repair method you use at this point, as that may shink more.