I have recently had an oil test done on my 912 uls that showed lead in the oil at 44 ppm

Is this unduly high?

Where would it have come from? Is there any lead in the manufactuering of the engine?

I use Mobil Mogas 95 only, no AVgas for 10 years, Morris API SN, engine has 450 hours

Any ideas please

912 owner

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