<VV> Used 12 plate oil cooler - not so cool

[John Beck]

I'm no expert on this stuff but unless you're bypassing big chunks of
steel, it seems like the flow of hot oil under full pressure would do a
pretty good job of powerwashing the inside of the oil cooler.  A good
cruise should wash away ansy nasty bits that might have collected from a
cold start.  --J.B.

BobHelt at aol.com wrote:
> 
> Hi Stephan,
> This is interesting.  I wonder how this is happening and whether,  maybe, it
> is a common event.  It happened to me on my last rebuild, too,  but I didn't
> think much about it until now.  I suppose that iron  (and  maybe alum too),
> particles bypass the oil filter under cold starts and thick oil  conditions to
> settle-out and lodge in the cooler. They then, probably, cause no  damage as
> long as the cooler is not moved. But removing the cooler, cleaning it,  and
> moving it around dislodges the particles and frees them up to cause  trouble.
> 
> Has anyone else encountered particles coming out of a cooler after being
> cleaned and jiggled?