slightly high aluminum in an IO-360

"G.R. Patterson III" wrote in message ...
"Robert M. Gary" wrote:

I've checked the filter beofre and not found anything. However, I've
never checked the screen. I'm not sure if my IA is doing that during
annual or not.

The screen should be checked every 50 tach hours. If the shop is changing the oil as
part of the annual, they almost certainly are checking the screen. If they aren't I
would wonder what else they're skipping.

I'm sure the shop is doing it but I do most of the oil changes myself
(except the one at annual). I'm not checking the screen. I'll have to
schedule some time with the A&P to have him show me how to do it. The
Lycoming guy said they've seen cases where a filter has come out clean
because there were so many chunks of big metal plugging up the screen.

-Robert