Oct 022010
 

When I removed the heater coolant loop I found two very bad things:

  1. It was green.
  2. It had gunk in it, like­ly small amounts of set­tled oil.

Now.  Why is it being green bad you ask?  It is because the DT466, while a mag­nif­i­cent engine, is prone to var­i­ous issues if one uses improp­er flu­ids or sim­ply doesn’t change them out when sched­uled.  Green antifreeze is /not/ what makes the engine hap­py.  Green antifreeze is what makes the sleeves eat through rapid­ly due to cav­i­ta­tion.

The sec­ond prob­lem, the gunk?  Yeah, fair­ly obvi­ous do-not-want issue. 😛

Worst case was I have to do a rebuild, looks more like­ly that will be the case.  Rough­ly $1100 and I get to basi­cal­ly start new on engine wear.  Not a bad deal.

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