Open your oil fill cap while you let it warm up, that HELPS. Let it warm up thuroughly... After that all you can do it let it run at freeway speed to kill off the rest of the fog.
Word also is that you can put a little "Seafoam" in your oil and it will keep the moisture out but I don't trust it personally. Seafoam is a rather harsh detergeant with a similiar chemical composition to kerosine. It may remove moisture but at what cost to your internals?