With a double POD of a Japanese "lucky guess" of a deep oil deposit at Sachalin, combined with successful Japanese industrial espionage against USA to get at deep drilling techniques (at that moment only available in USA), the Pacific war may be averted or lessened and Japan gets to keep continental territories. Improbable, though.
To those knowledgeable about oil drilling out there: is the same technology needed for deep prospecting and commercial drilling, or is it possible, in the technological context of the late 1930s, to imagine a lucky fund with a thin prospecting drill without the technological ability to get at industrial amounts of that oil?