hi-pumpjack-03467455One of the world’s leading investment banks says the benchmark price of North American oil is going to fall even further, to $70 US a barrel by next spring. Investment bank Goldman Sachs slashed its forecast late Sunday night for both West Texas Intermediate (known as WTI) and Brent crude — the two most common types of oil used and sold in North America and Europe. Goldman Sachs says WTI will go for $75 a barrel in the first three months of 2015. Brent, meanwhile, will change hands at $85 a barrel. Both forecasts are down $15 from what the bank was last expecting. And both are forecast to slip even lower in the second quarter — historically a seasonally low time for oil prices — before rebounding a little in the summer of 2015. If the prediction on WTI proves correct, it will be the lowest price for North American oil since 2010, when crude was on its way higher after cratering during the recession of 2008 and 2009. More