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US 2019/0194570 A1Published application
Manual transmission oil composition having enhanced frictional properties and enabling improved fuel efficiency
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorJung Joon OH
Life of this patent
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Abstract
A manual transmission oil composition includes: polyisobutenyl succinimide serving as a detergent-dispersant; and comb polymethacrylate (comb PMA), which has at least one of polar and nonpolar branches connected to a main chain thereof, and serves as a viscosity modifier. Polyisobutenyl succinimide is contained in an amount of 1 wt % to 5 wt % based on a total weight of the manual transmission oil composition, W and comb PMA is contained in an amount of 4 wt % to 12 wt % based on the total weight of the manual transmission oil composition.
Claims10
A manual transmission oil composition, comprising:
- polyisobutenyl succinimide serving as a detergent-dispersant;
- and
- comb polymethacrylate (comb PMA), which has at least one of polar and nonpolar branches connected to a main chain thereof, and serves as a viscosity modifier.
Dependencies are inferred from the claim text.