661 Oil Test 32:1 vs 40:1 vs 50:1 ?

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This 372 piston doesn't look bad. A little red oil in it.

View attachment 441060
Tuning appears to be a little rich but pretty decent given your probaly milling with it. Not overly impressed with the heavy crusty appearance of the carbon on the crown. It appears simular to what I have seen with Klotz R50.
 
Tuning appears to be a little rich but pretty decent given your probaly milling with it. Not overly impressed with the heavy crusty appearance of the carbon on the crown. It appears simular to what I have seen with Klotz R50.
It's not mine. I just thought to take a picture of it while it was apart.
 
Echo saws suck donkey balls. Except the 590 timberwolf. That beast is right up there with a 362 C-M. I'm hoping red armpit is the 590 timberwolf of echo oil, and not the donkey ball sucking kind
 
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