Solvency enhancer compositions, methods of preparation and methods of use thereof

A solvency enhancer composition for a lubricating oil, the solvency enhancer composition comprising:

• a first branched or dimerized Guerbet alcohol comprising 24 carbon atoms;
• a second branched or dimerized Guerbet alcohol comprising 25 carbon atoms;
• a third branched or dimerized Guerbet alcohol comprising 26 carbon atoms;
• and
• 16-methylheptadecanol.

A lubricating oil composition, comprising:

• a solvency enhancer comprising:
• a first branched or dimerized Guerbet alcohol comprising 24 carbon atoms,
• a second branched or dimerized Guerbet alcohol comprising 25 carbon atoms,
• a third branched or dimerized Guerbet alcohol comprising 26 carbon atoms,
• 16-methylheptadecanol,
• at least one adipate ester in an amount of greater than 0 vol % to about 5 vol % based on the total weight of the lubricating oil composition, and
• a base oil in an amount of about 30 vol % to about 70 vol % based on the total weight of the lubricating oil composition, wherein the base oil comprises a Group I base oil, a Group II base oil, or a combination thereof;
• and
• a lubricating oil.

A method of maintaining dissolution of byproducts in an in-service lubricant oil, comprising:

• flowing, storing or both the in-service lubricant oil in operating equipment, wherein the in-service lubricant oil comprises an effective amount of a solvency enhancer and is subject to oxidation, thermal degradation, hydrolysis, or a combination of two or more thereof, wherein the solvency enhancer comprises:
• two or more alcohols, the two or more alcohols comprising at least one Guerbet alcohol with 24-26 carbon atoms and 16-methylheptadecanol, wherein the two or more alcohols are in an amount of about 40 wt % to about 100 wt % based on the total weight of the solvency enhancer;
• and
• dissolving byproducts in the in-service lubricant oil, dissolving organic deposits in the operating equipment, preventing sludge in the in-service lubricant oil, preventing varnish formation in the in-service lubricant oil, or a combination of any two or more thereof.