At a press event tonight, Ollie Howlett, JCB’s engine service manager said the engine and equipment manufacturer’s Tier 4 engines would run on standard, not low-ash oil. JCB will also work with its dealers to offer customers a “recalibration” on their engines, which will allow them to be resold in countries that do not use ultra-low sulfur diesel fuel. “This recalibration won’t sacrifice and of the performance advances we’ve made with these engines,” said Howlett.