2015 dodge ram 1500 longhorn ecodiesel 50,000 miles

[Danno1976]

So just had oil cooler go out on it and dealership claimed they changed oil and flushed coolant system, but coolant reservoir is still black. It's not frothy but definitely oil in it. I just purchased truck a month ago and repair was done under factory warranty. I have 100,000 additional extended warranty. Is it safe to drive or take it back to dealership

 

[carlhenry]

welcome 2 the group it will take MANY flushes 2 get rid of the oil keep flushing it with water its cheaper

 

[BoostN]

Welcome! Just like @carlhenry said, it's gonna take a bit to get all of that out. I'd make them get it right since it's still under warranty.