Best and longest lasting engine for the Prostar

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{"text":"Hi guys,\r\rWhat would be considered the best power plant for the Prostar. Is the ISX any good? I'm well versed in the Maxxforce as we currently own one and it's running after several thousands of dollars we've invested in it. \r\rWhat engine would you suggest that isn't in a Prostar?\r\rHeavyD:\r\rWhat is the life expectancy of EGR coolers in the Maxxforce? And what is the life expectancy in miles for the Maxxforce?????","pics":"[]","canComment":true}