There is disclosed a method of providing at least one fuel additive to a heavy fuel oil, the method comprising: adding at least one fuel additive into a container comprising a heavy fuel oil, the addition occurring at a location removed from the end use site.
The present disclosure relates to methods of improving viscosity shear stability of a lubricating oil and lubricating oil composition comprising:a base oil of lubricating viscosity;an amount of one or more zinc dialkyl dithiophosphate compound(s); wherein the lubricating oil composition has one or both of the following ratios:a) a ratio of KV40° C.fresh to a weight % of zinc contributed by the one or more zinc dialkyl dithiophosphate compound(s) based on a total weight of the lubricating oil composition, of greater than 510, wherein KV40° C.fresh is the kinematic viscosity of the fresh lubricating oil composition at 40° C.; andb) a ratio of KV40° C.fresh to a weight % of phosphorus contributed by the one or more zinc dialkyl dithiophosphate compound(s) based on a total weight of the lubricating oil composition, of greater than 560, wherein KV40° C.fresh is the kinematic viscosity of the fresh lubricating oil composition at 40° C.
用于提供使用油中磷保留量的润滑油组合物和降低发动机尾气催化系统催化剂失活的方法。润滑油组合物是由基础油和含含磷添加剂混合物的添加剂组合物提供的。含磷添加剂混合物包括有灰磷化合物和无灰磷化合物。由润滑油组合物提供的磷保留值在油老化后大于润滑油组合物初始磷含量的约85％。
A novel a multi-functional polymer viscosity modifier comprising an additive reaction product obtained by reacting a first monomer comprising an alkylacrylate with a second monomer comprising an olefinic carboxylic acylating agent under conditions effective for free radical polymerization of the first and second monomers to provide a base polymer comprising an acylated alkylacrylate copolymer, and wherein the base polymer optionally may be further reacted with an amine compound to provide a multi-functional polyalkylacrylate copolymer. The base polymer has good thickening efficiency. The multi-functional polyalkylacrylate copolymer dispersant viscosity modifier has good thickening efficiency. The base polymer and the multi-functional polyalkylacrylate copolymer viscosity modifier have good thickening efficiency, low temperature properties, dispersancy, and antioxidancy properties. They also have no precipitation or sedimentation, nor cause or encourage such formations in finished fluids incorporating them.
A mixture including a thiophosphoric acid product suitable for preparing organometallic and/or ashless antiwear additives having improved copper corrosion performance. The thiophosphoric acid product is distilled and recovered as a condensate of the distillation and having a low level of active sulfur.
The present disclosure relates to lubricating compositions and, in particular, lubricating compositions suitable for motorcycle applications including select metal dihydrocarbyl dithiophosphates to achieve low copper corrosion, good TBN retention, and good sulfur retention applicable to motorcycle engines and transmissions.
A gear fluid composition for lubricating a driveline including a combination of short-chain polysulfide and long-chain polysulfide extreme pressure agents to minimize sulfur loss and to maintain high extreme pressure performance.
Gear oil additive concentrates and lubricant compositions containing a combination of additives which minimize noise and vibration that occasionally develop in limited slip axles. The additive combinations include (i) an oil-soluble succinimide of the formula ##STR1## wherein R.sub.1 is alkyl or alkenyl having 8 to 50 carbon atoms, and R.sub.2, R.sub.3 and R.sub.4 are hydrogen atoms or alkyl or alkenyl groups having up to about 4 carbon atoms; and (ii) a boronated or non-boronated carboxylic derivative composition produced by reacting a substituted succinic acylating agent with (a) amine having at least one primary or secondary amino group in the molecule, or (b) at least one alcohol, or (c) a combination of (a) and (b). The substituent of the succinic acylating agent is derived from polyalkene having a number average molecular weight of about 500 to about 100,000. The additive concentrates and lubricant compositions are devoidd of any metal-containing component.
An additive concentrate comprising a viscosity index modifying copolymer comprising the reaction product of an acylated ethylene-olefin copolymer and a polyamine, and lubricating compositions containing the same are provided. Methods of improving boundary film resistance of a lubricating composition and modifying the viscosity of a lubricating composition are also provided.
Clean gears in the L-60 Test result from the use of gear oils containing, in combination, (i) a carboxylic derivative such as a succinimide, boronated succinimide, succinic acid ester, boronated succinic acid ester, succinic acid salt, (or any mixture of these), in which the succinic moiety is substituted by a group derived from polyalkene having an Mn value of about 500 to about 10,000; and (ii) one or more amine salts of one or more long chain monocarboxylic acids or of one or more long chain polycarboxylic acids or of a mixture of one or more long chain monocarboxylic acids with one or more long chain polycarboxylic acids.
