dirty oil
On Mon, 29 Jan 2007 13:49:26 -0600, "Dan Luke"
wrote:
wrote:
Definitely have an A&P borescope that engine. Broken ring maybe.
Talked to my mechanic this morning. He said not to worry; the dirty oil is
from the oil cooler and its plumbing, which don't get drained when the oil is
changed.
He said I would have noticed this before if I had ever checked it two hours
after a change. Since I check the oil before every flight, it seems I would
have noticed the oil's turning black this soon before.
Should I pay to have the cylinders 'scoped?
Your mechanic's comment sounds unrealistic. I have a hard time
believing the 1/2 quart in the cooler & lines could add enough
coloration to the 7-8 quarts of new/clean oil.
Further, I don't notice my oil turning black until many hours after
the change. (Lyc O-360 using Aeroshell 15W50), and I never flush the
cooler during a change.
Is your oil a dark black? Or just a tinge of coloration?
|