Abstract: A fuel composition which includes at least: a fuel from one or more sources selected from the group that comprises mineral, plant and synthetic sources; a compound (T1) selected among polyalkylene glycols, C1-C12 alkyl and polyalkylene glycol ethers, and the mixtures thereof; and a compound (T2) selected among the non-ionic emulsifiers. Also, an additive composition including at least: a compound (T1) selected among the C1-C6 alkyl and polyethylene glycol ethers including two to six units of ethylene glycol; a compound (T2) selected among the esters of one or more C1-C36 alkenyl carboxylic or alkyl carboxylic acids, and a polyol selected among sorbitan and isosorbide, taken alone or mixed together; and possibly a detergent additive. Further, a method for preventing, avoiding or delaying the formation of ice crystals or flakes in a tank of a vehicle provided with an internal combustion engine.

Abstract: A fuel composition which includes at least: a fuel from one or more sources selected from the group that comprises mineral, plant and synthetic sources; a compound (T1) selected among polyalkylene glycols, C1-C12 alkyl and polyalkylene glycol ethers, and the mixtures thereof; and a compound (T2) selected among the non-ionic emulsifiers. Also, an additive composition including at least: a compound (T1) selected among the C1-C6 alkyl and polyethylene glycol ethers including two to six units of ethylene glycol; a compound (T2) selected among the esters of one or more C1-C36 alkenyl carboxylic or alkyl carboxylic acids, and a polyol selected among sorbitan and isosorbide, taken alone or mixed together; and possibly a detergent additive. Further, a method for preventing, avoiding or delaying the formation of ice crystals or flakes in a tank of a vehicle provided with an internal combustion engine.

Abstract: The invention relates to a method of determining the rate of dilution of the lubricating oil by the fuel in an internal combustion engine. The invention is characterized in that it comprises the following steps consisting in: marking either the lubricating oil or the fuel with a radioactive tracer, measuring the radioactivity of an oil sample using a detector that is sensitive to the radioactive radiation emitted by the radioactive tracer, and transmitting the results of the aforementioned measurements to a computer which uses said results in order to calculate the rate of dilution of the lubricating oil by the fuel. The invention also relates to a device which is used to implement said method, in particular a test bench for engines.

Abstract: The invention relates to a method of determining the rate of dilution of the lubricating oil by the fuel in an internal combustion engine. The invention is characterised in that it comprises the following steps consisting in: marking either the lubricating oil or the fuel with a radioactive tracer measuring the radioactivity of an oil sample using a detector that is sensitive to the radioactive radiation emitted by the radioactive tracer, and transmitting the results of the aforementioned measurements to a computer which uses said results in order to calculate the rate of dilution of the lubricating oil by the fuel. The invention also relates to a device which is used to implement said method, in particular a test bench for engines.