Alloy in the oil
Just found this week.
0-235
About 580 Hours
Mostly training
Orignial fit cylinders on factory overhauled engine
Ad 80 oil
Found in opened oil filter at 50 hour check.
Front two cylinders being removed for inspection....... at the moment!
Also this summer.
0-320
2200 hours
Training and touring
Oringinal fit factory new engine
Ad 80 oil
Also found ferous bits so engine replaced.