OIl analysis

Plumb ? I have a lot of samples on my 914.

Pb is the symbol for lead (plumbum in Latin).  Lead pipes were standard "plumbing" for millenia.

Naturally it will show high lead in your oil sample if you are using avgas all the time.

If you look at the Chrome (Cr) is also increasing since 2018. Mechanics told me that some times chrome is used  in covering incilinders . I don´t know if i have to worry about it. My compression test is alwais perfect . I only loose 1 psi in 1 cilinder in 4 years..

Over 200 hours time sampled around 35 to 40 hours each, I had five samples at 1ppm and  two samples at 2ppm. I would just keep watching it. If my sample period were longer I would probably be higher than you. If you want to see my sheet shoot me you email address.

Tony i would be happy to see your numbers. Here in Brazil no one  do oil analisys on Rotax engines.

my email:akess@uol.com.br