ANTIWEAR SYSTEMS FOR IMPROVED WEAR IN MEDIUM AND/OR HEAVY DUTY DIESEL ENGINES
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United States of America
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Dec 26, 2024
app pub date -
Sep 3, 2024
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Sep 3, 2024
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Abstract
The present disclosure relates to lubricating compositions and, in particular, lubricating compositions suitable for medium and/or heavy duty diesel engines having low levels of phosphorus and/or zinc but still achieving good valve train wear by including an antiwear system provided from overbased zinc dihydrocarbyl dithiophosphates having a selected average degree of branching and a certain percent of hydrocarbyl groups derived from secondary alcohols.
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