Many people notice that used cars and contract engines from Japan are usually in excellent condition, even with mileage of 200,000–300,000 km. The theory that Japanese manufacturers make special cars for their domestic market has no basis.
The key point is that the Japanese follow a culture of careful vehicle maintenance and value their status in the secondary market. In Japan, it is considered unacceptable to let a car fall into poor condition, which sets them apart from unscrupulous sellers.
Factors affecting engine wear:
1. Operating conditions (normal or severe).
2. Fuel quality.
3. Oil change intervals.
4. Oil quality.
Operating conditions play a key role in maintenance. Urban driving, especially in Russia, is considered severe.
Fuel quality is also important: dishonest gas stations may sell counterfeit fuel, which negatively affects the engine. To avoid this, it is better to refuel at branded stations with high-quality fuel (octane rating 98–100, environmental class no lower than K5).
Oil change intervals vary from manufacturers’ recommendations to marketing advice. The Japanese, relying on research, follow stricter standards, which ensures their well-known “Japanese quality.”
