Tossa ihan mielenkiintoinen taulukko sinkistä jota siis useissa synteettisissä öljyssä on huomattavan vähän.

https://mobiloil.com/~/media/amer/us/pvl/files/pdfs/mobil-1-oil-product-specs-guide.pdf

Ja tähän vielä lontooksi mobilin edustajan lausunnosta lainaus:
The active ingredient that you are talking about is phosphorus that is added through a component called ZDDP. For products that meet the ILSAC GF-5 specification, the phosphorus levels for the oil must be less than 800 ppm phosphorus. The ILSAC level for phosphorus has been reduced to protect the catalytic converter and other emission protection equipment. The engine manufacturers are confident that this level of phosphorus will protect both new and older engines. However, there are Mobil 1™ synthetic oils that have a higher level of phosphorus (phos) and can be used in engines in racing or high-performance applications; see the attached table.

Aika monessa lähteessä pidetään 1000 "turvallisena" rajana laahaavalle nokalle.