Embarrassment, cummins has coolant filters?

I'm embarrassed to admit that I only just found out Cummins had these....

(Cue: Bush - 'Little Things')


I know there's a thread on coolant filters on here somewhere, but I forgot where.

 

Wow, sure hope that didn’t come out of your engine.
That’s nasty.

 

Was something happening because of it?

 

Lulz. Wrench changes mine every pm.

 

Is it possible someone has put stop leak in your radiator at some point?

 

@TallJoe rawze claims it should be changed every (minimum) 50k miles

@Antinomian not that I'm aware. Looks and feels like ordinary sludge.