Oil grade 229.3 refers to a specific engine oil specification issued by Mercedes-Benz, targeting gasoline and diesel engines with certain requirements for emission systems. This standard ensures oils meet strict criteria for wear protection, longevity, and compatibility with the car's exhaust after-treatment technologies, including catalytic converters and diesel particulate filters, to maintain engine performance and emission standards. Oils certified to this specification undergo rigorous testing to guarantee they adhere to Mercedes-Benz's stringent requirements, helping to extend vehicle life and optimize fuel efficiency. It's crucial for Mercedes-Benz owners to use oils that meet this grade to ensure their vehicle operates effectively and maintains warranty coverage.

The U.S. Food and Drug Administration FDA generally considers titanium dioxide to be safe GRAS for use in food. drugs. and cosmetics. However. small amounts are usually recommended.

Titanium. symbol Ti and atomic number 22. is a lustrous transition metal known for its silvery color. low density. and high strength. This resistance to corrosion by seawater. aqua regia. and chlorine was discovered in 1791 by William Year Gregor in Cornwall. England and later named after the Greek god Titan by Heinrich Klaproth. The element can be found abundantly in mineral deposits such as rutile and ilmenite throughout the earth's crust and lithosphere. Its excellent mechanical and physical properties - including high melting point. specific strength. biocompatibility with the human body. and more - make it a sought-after material for various applications such as aerospace. military. automotive. medical prosthetics. orthopedic implants and dental implants. Despite these benefits. titanium remains a relatively expensive option due to its difficulty in machining and need for high-temperature manufacturing processes.