Civil unrest in Egypt, strikes in Libya and the onset of hurricane season are supporting the bull's position.
A stronger dollar, stumbling equities and less than robust economic data are supporting the bears.
On the New York Mercantile Exchange, West Texas Intermediate crude shed 51 cents to reach $106.78 per barrel. Reformulated blendstock gasoline added 0.38 cents to reach $2.9713 per gallon. Home heating oil gained 0.38 cents, as well, to reach $3.0869 per gallon.
Natural gas added 8.1 cents to $3.3449 per million British thermal units.
At the pump, the national average price for a gallon of unleaded regular gasoline was $3.538, down from Sunday's $3.54, the AAA Fuel Gauge report said.
Notable deaths of 2014 [PHOTOS]