The service life of engines with a small volume is much shorter than with a large volume, due to the fact that the former are almost constantly operated at maximum load.
With proper operation and timely routine maintenance, the mileage of the Driver determines by his handling of the engine whether the engine will fail early or its resource will be 150,000 km or more. Oil temperature is critical to engine life. The coolant reaches operating temperature earlier, while the oil fully warms up and acquires working properties only 10 minutes after the start of movement.
When driving in the city for short distances for more than one week, it is better not to give the engine a high speed.
When the engine is idling for a long time, deposits form in the combustion chambers and on the valves, which, at full operating temperature and smooth driving, gradually burn out. For vehicles with a tachometer: this is approximately 4000-5000 rpm. The most optimal is the mode of driving on a country road.
Diesel Renault 19, which was operated in favorable conditions and has a high mileage, can start normally even at low temperatures. It depends on the degree of wear of the working surface of the cylinder in the area of the dead center of the first piston ring. The surface of the cylinder in this place acquires a deep groove in the area around the piston ring, which reduces the compression in the combustion chamber when the engine is started. The air in the combustion chamber is not heated to the correct temperature during the compression stroke. This results in the injected diesel fuel not igniting even though the preheater is working properly. In this case, the diesel engine can be started by towing. If the owner of the diesel Renault 19 does not want to use the services of a towing vehicle every time the temperature drops sharply, then it is necessary to carry out the appropriate repairs.