<ul data-eligibleForWebStory="false">Brent crude oil futures reached an intra-week high of $70.71 but face resistance at $71; breakout needed for positive outlook.A breach of $71 could lead to a rally towards $75 and then $80, with support at $66 in case of decline.Crude oil futures opened at ₹5,580 on Monday, rallying to ₹5,914 but facing resistance at ₹5,900; support at ₹5,500.Expectation for the contract to trade between ₹5,500 and ₹6,000 before a clear trend is established; resistance at ₹6,500 and support at ₹5,150.