Summary: | It is appreciated that the engine is the heart of the motor vehicle, and the lubricant
is considered the blood that ensures its good operation. The life and reliability of any motor
vehicle is dependent on the user's attention to care and timely performance of technical
overhauls and engine oil changes. The scientific work presents a concrete research carried out
by the authors in order to implement some concepts, in which the technical aspects of the
lubricants used in the thermal engines of motor vehicles are presented through an analysis of
three types of engine lubricant from three major manufacturers in the field. In this way, those
interested can learn about the type, technical characteristics, functions, role, necessity and the
importance of motor lubricants for the proper functioning of car thermal engines. Finally, the
conclusions in the addressed field are presented.
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