By Claudia Assis
SAN FRANCISCO (MarketWatch) -- Crude-oil futures turned lower in early trading Wednesday, falling under $77 a barrel. Crude oil for August delivery lost 13 cents, or 0.2%, to $76.90 a barrel. Other energy products held on to gains, with August reformulated gasoline losing less than a penny to $2.07 a gallon and natural gas adding a penny to $4.32 per million British thermal units.
