Non-traditional drivers of crude... - CNN Money

"It looks like the European package [for Greece] may be falling apart," said Bradley Samples, a commodities analyst for Summit Energy. "Knowing that's not good for the euro, [investors] might sell crude."

"Crude is stalling out," said Samples. "Some traders have backed out [of the market] under the impression that nosebleed valuations are unsustainable."

While Greek debt worries continue to haunt the market, many analysts expect oil prices to rise based on stimulative policies from global central banks, recent policy decisions by OPEC and the Fed, and recent increases in oil demand.

Samples agrees, but expects trading based on the dollar to dissipate in coming months, as investors look more to inflationary pressures in China and other emerging economies.

"Inflation expectations will drive crude oil trading over the course of the year," he said.

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