The present invention generally relates to oil compositions, primarily to fuel oil and petroleum compositions produced there from susceptible to wax formation at low temperatures, to polymeric imides for use with such fuel oil compositions, and to methods for their manufacture.

This invention relates to a lubricating oil composition comprising: at least 50 mass % or more of one or more base oils; detergent; and 0.01 to 20 mass % of a functionalized polymer comprising a partially or fully saturated olefin homopolymer or copolymer backbone and at least one functional group, having: i) an Mn of 10,000 g/mol or more (GPC-PS) of the polymer prior to functionalization, ii) where in the functional group is derived from an acylating agent and a compound containing amino and/or hydroxyl groups, and iii) optionally, wherein the homopolymer or copolymer backbone is derived from monomers selected from the group consisting of C.sub.2 to C.sub.30 (such as linear) alpha olefins and C.sub.4 to C.sub.20 conjugated dienes; where PIBSA-PAM having an Mn of 1,600 g/mol or more (GPC-PS) is absent or substantially absent from the lubricating oil composition, or, if present, is present in an amount such that the weight ratio of the functionalized polymer (B) to the high molecular weight PIBSA-PAM is at least 0.25:1.

The present disclosure relates to heavy duty crankcase lubricating oil compositions achieving high piston cleanliness of steel piston pursuant to the OM471 piston cleanliness test using a detergent system of sulfonate soap and dispersant system of one or more polyisobutylene succinimide dispersants to the lubricating oil composition.

The present disclosure relates to heavy duty crankcase lubricating oil compositions achieving high piston cleanliness of steel piston pursuant to the OM471 piston cleanliness test using a detergent system of sulfonate soap and dispersant system of one or more polyisobutylene succinimide dispersants to the lubricating oil composition.

Lubricating oil compositions are disclosed that are suitable for use in all engine types and that provide a reduced Average Friction/Traction coefficient in use, with attendant improvement in fuel economy performance, especially retained fuel economy performance. The disclosed compositions are also advantageous in that molybdenum-based friction modifying ingredients previously considered crucial to reducing friction from metal-metal contact and high molecular weight PIBSA-PAM dispersants can be omitted or used at lower treat rates without impairing friction-reducing or fuel economy performance.

Lubricating oil compositions are disclosed that are suitable for use in all engine types and that provide a reduced Average Friction/Traction coefficient in use, with attendant improvement in fuel economy performance, especially retained fuel economy performance. The disclosed compositions are also advantageous in that molybdenum-based friction modifying ingredients previously considered crucial to reducing friction from metal-metal contact and high molecular weight PIBSA-PAM dispersants can be omitted or used at lower treat rates without impairing friction-reducing or fuel economy performance.

This invention relates to methods to reduce abnormal combustion events in the operation of an internal combustion engine comprising using a lubricating oil composition comprising/resulting from the admixing of: (i) base oil, (ii) detergent, preferably providing at least 800 ppm Mg and less than 500 ppm Ca; and (iii) abnormal combustion event inhibitor compound(s), preferably comprising at least one phosphorus containing compound providing greater than 0.12 mass % phosphorus; wherein: 1) the lubricating oil composition is a SAE 10W-X, SAE 5W-X or SAE 0W-X blend, where X is 8, 12, 16, 20, or 30; and 2) when the lubricating oil composition is combined with an 88 octane reference fuel, the combination completes at least 1 iteration of 175,000 cycles per iteration, as determined by Sequence IX Test, ASTM D829.

This invention relates to methods to reduce abnormal combustion events in the operation of an internal combustion engine comprising using a lubricating oil composition comprising/resulting from the admixing of: (i) base oil, (ii) detergent, preferably providing at least 800 ppm Mg and less than 500 ppm Ca; and (iii) abnormal combustion event inhibitor compound(s), preferably comprising at least one phosphorus containing compound providing greater than 0.12 mass % phosphorus; wherein: 1) the lubricating oil composition is a SAE 10W-X, SAE 5W-X or SAE 0W-X blend, where X is 8, 12, 16, 20, or 30; and 2) when the lubricating oil composition is combined with an 88 octane reference fuel, the combination completes at least 1 iteration of 175,000 cycles per iteration, as determined by Sequence IX Test, ASTM D829.