Use of a polyalkylene glycol to reduce fuel consumption

A process for minimization of power loss in an internal combustion engine and for improving acceleration of an internal combustion engine, the process comprising:

• operating an internal combustion engine with fuel, said fuel comprising
• a polyalkylene glycol of formula I
• HO-(A-O)p—(CH2CH2—O)m-(A-O)q—H (I)
• A is a mixture of two different types of alkylene groups A1 and A2 with A1 designating one or more C3- to C4-alkylene groups and A2 designating one or more C8- to C12-allylene groups, A1 and A2 being arranged randomly or blockwise,
• m is a number of from 2 to 100 and p and q are each numbers of from 1 to 100.

A process for improving the lubricity of a lubricant oil contained in an internal combustion engine for lubricating purposes, the process comprising:

• operating an internal combustion engine with fuel, said fuel comprising
• a polyalkylene glycol of formula I
• HO-(A-O)p—(CH2CH2—O)m-(A-O)q—H (I)
• A is a mixture of two different types of alkylene groups A1 and A2 with A1 designating one or more C3- to C4-alkylene groups and A2 designating one or more C8- to C12-alkylene groups, A1 and A2 being arranged randomly or blockwise,
• m is a number of from 2 to 100 and p and q are each numbers of from 1 to 100;
• wherein said polyalkylene glycol of general formula I is present in the fuel in an amount effective for improving the lubricity of said lubricant oil.

A fuel composition, comprising:

• in a major amount, a gasoline fuel, and,
• in a minor amount, a polyalkylene glycol, and
• at least one fuel additive which is different from the said polyalkylene glycol and has detergent action,
• wherein the polyalkylene glycol is of formula I
• HO-(A-O)p—(CH2CH2—O)m-(A-O)q—H (I)
• A is a mixture of two different types of alkylene groups A1 and A2 with A1 designating one or more C3- to C4-alkylene groups and A2 designating one or more C8- to C12-alkylene groups, A1 and A2 being arranged randomly or blockwise,
• m is a number of from 2 to 100 and p and q are each numbers of from 1 to 100.

An additive concentrate, comprising:

• at least one polyalkylene glycol, and
• at least one fuel additive which is different from the polyalkylene glycol and has detergent action,
• wherein each of the at least one polyalkylene glycol is a polyalkylene glycol of formula I
• HO-(A-O)p—(CH2CH2—O)m-(A-O)q—H (I)
• A is a mixture of two different types of alkylene groups A1 and A2 with A1 designating one or more C3- to C4-alkylene groups and A2 designating one or more C8- to C12-alkylene groups, A1 and A2 being arranged randomly or blockwise,
• m is a number of from 2 to 100 and p and q are each numbers of from 1 to 100.