2015 powerstroke ????

[txdukklr]

my 2011 6.7 i never added coolant a single time . . . . .can't tell you whats wrong but thats strange

[AddisonOil]

Yes I parked it on a curb and crawled underneath when the motor was up to temp. Any other ideals anyone has would be helpful?????

It's the radiator dude. Drivers side, bottom corner. I'd bet a miniature unicorn on it.

Only leaks when running down the highway, and just leaks a little bit.

Get on Powerstroke.org and read til your eyes bleed...

[bentman]

I just had someelse tell me the exact same thing. Next road trip I'm going pull over and look for a leak.if that is hopefully it will not be expensive.

[Outback]

Not sure about a diesel but you can usually buy radiators on Amazon for <$100.

[Nike]

I have the same issue. Will check mine soon