About 700 hours on 912UL.Have owned it for now 4 oil changes.
On magnetic oil plug I'd describe the layer of material about 1/32nd thick on the tip of it.
Not even sure if it was actually magnetic .... could've been carbon like sludge.
(Should have wiped it off and tested it with another magnet... but didn't think of that at the time.)
Dissected the filter, rinsed the catchings out with gasoline and pour through a white paper towel filter to see whats there. Not much of anything, and I'd have to describe the metal there as between "hardly detectable" and "non-existant."
So I'd bet big money that's withing "acceptable" limits.
Our local A&P guys jokes that "it there are no pieces in there that you can read serial numbers on you're OK" .... but he's used to Lycomings that routinely show filings in the filters much more than Rotaxes do. And I know, for example, that Lycoming considers finding 1/8th of a teaspoon of filings merely cautionary.... they say, essentially, change oil and filter, fly 25 hours and check again, and if little more shows up on the next check don't worry about it. If I found that much in our filter I'd consider that a major red light.
But I'm curious: What the acceptable, or cautionary, or "better take action on this" criteria on filings in the 912 filter or the magnetic plug are?
Are there photos of "normal" and "excessive" filings on the plug?
On magnetic oil plug I'd describe the layer of material about 1/32nd thick on the tip of it.
Not even sure if it was actually magnetic .... could've been carbon like sludge.
(Should have wiped it off and tested it with another magnet... but didn't think of that at the time.)
Dissected the filter, rinsed the catchings out with gasoline and pour through a white paper towel filter to see whats there. Not much of anything, and I'd have to describe the metal there as between "hardly detectable" and "non-existant."
So I'd bet big money that's withing "acceptable" limits.
Our local A&P guys jokes that "it there are no pieces in there that you can read serial numbers on you're OK" .... but he's used to Lycomings that routinely show filings in the filters much more than Rotaxes do. And I know, for example, that Lycoming considers finding 1/8th of a teaspoon of filings merely cautionary.... they say, essentially, change oil and filter, fly 25 hours and check again, and if little more shows up on the next check don't worry about it. If I found that much in our filter I'd consider that a major red light.
But I'm curious: What the acceptable, or cautionary, or "better take action on this" criteria on filings in the 912 filter or the magnetic plug are?
Are there photos of "normal" and "excessive" filings on the plug?
