In article ,
Tamaroak wrote:


I decided to have my engine oil analyzed after changing it this fall.
It's a good thing I did, because they found antifreeze in it. That, plus
my having to add antifreeze once in a while towards the end of the
season tells me I have a serious problem. Not so serious while it's on
the trailer and easy to transport to the engine guy, but a lot more
serious had I noticed this problem next June 100nm north of Prince
Rupert on the way to Juneau! We're guessing there is a cracked head or
bad head gasket.

Anyways, they also found 340ppm of iron in the oil, which they call
abnormal. Is this a problem at that level?

This is from a 1987 5.7L 260hp with 770 hours on it. I also ran it 165
hours on Amsoil 15-40 marine diesel oil this season before the change,
although the analysis showed no signs the oil was deficient.

Capt. Jeff

Yeah, it is a problem, and probably a consequence of the coolant being in
there (abnomrally high wear)

Fix the coolant problem, do a few short-interval changes, and then resample
and see if those iron numbers return to normal.

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