The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Engine oils are always formulated with overbased metallic detergents to neutralize acid and to prevent the deposition of degraded products. Among the detergents, overbased magnesium detergents sometimes form needle crystals. From research on the mechanism of needle crystal formation, we found a significant effect of water content and carbonic acid gas content in oil, and the type of magnesium detergents.
Engine oils are always formulated with overbased metallic detergents to neutralize acid, and to prevent the deposition of degraded products. Among the detergents, overabased magnesium detergents sometimes form the needle crystals. From the research on mechanism of the needle crystal formation, we found the great effect of water content and carbonic acid gas content in an oil, and the type of the...