What maintenance must be done for a Nissan car at 70,000 kilometers?
1 Answers
Nissan car maintenance that must be done at 70,000 kilometers includes replacing spark plugs and changing transmission oil. Introduction to spark plugs: Automobile spark plugs discharge the pulsed high-voltage electricity sent from the high-voltage wire, breaking down the air between the two electrodes of the spark plug to generate an electric spark, thereby igniting the mixed gas in the cylinder. The main types of spark plugs include: standard spark plugs, insulator-protruding spark plugs, electrode-type spark plugs, seat-type spark plugs, pole-type spark plugs, and surface-jump spark plugs. Spark plugs, together with the ignition system and fuel supply system, enable the engine to perform work, and to a large extent, jointly determine the engine's performance. The main components of a spark plug are the insulator, shell, terminal screw, and electrode. The insulator must have good insulation and thermal conductivity, high mechanical strength, and be able to withstand high-temperature thermal shock and chemical corrosion. The material is usually 95% alumina ceramic. Introduction to transmission oil: The transmission is filled with gear oil, also known as transmission oil, which is a type of transmission lubricant used for lubricating various gears in the transmission, reducer, and differential. It can prevent phenomena such as tooth surface wear and sintering, extend service life, and improve power transmission efficiency.
