RST Engineering wrote:

"A couple of months" tells us little about the number of hours. How many
hours on the engine since rebuild? What was done on the "rebuild"? New
rings (I hope), rechrome?

Darryl, I don't have my O-300 book handy, but as I recall when I overhauled
my engine the book recommended mineral oil for the first fifty hours.

About there or oil consumption geaux's down, which was what I was
eluding to. Some like to run a mixture of mineral and multiweight...

When I overhauled the 182 jugs and rechromed them, the oil temperature ran
hot for the first ten to fifteen hours, and then dropped like a rock when
the rings finally seated to the chrome.

Another thing is to make sure the blast tubes from the back baffle are
pointed at the oil screen and not bent and blowing elsewheres...

Whats your take on this "new" CO (Carbon monOxide) measurement
requirements at annual. Was our IA just extorting extra time/money?

http://www.faa.gov/avr/arm/arac/arac...nical3_all.doc
11. AC 20-32B, Carbon Monoxide (CO) Contamination in Aircraft -
Detection and Prevention.

Sec. 121.219 references ventalation requirements:
http://www.faa.gov/asd/international...%20Notepad.pdf
"carbon monoxide concentration may not be more than one part in 20,000
parts of air"

Page 15-6 just references what it can do to you in the Pilots Handbook:
http://av-info.faa.gov/data/training...83-25-4of4.pdf