Operation & Maintenance Manual for WP7 Euro Ⅵ Vehicle Diesel Engine Table 2-4 Oil changing intervals determined by oil working condition (changes with the oil consumption) 9 Normal oil working condition (at normal oil consumption) Severe oil working condition (at normal oil consumption) Ambient air temperature: -10℃ to +30℃ Sulfur content of fuel: less than 0.5% (by weight) A Tropical or frigid zone (temperature is always higher than +30℃ or lower than -10℃) B Sulfur content of fuel: 0.5%-1.0% C Sulfur content of fuel:
1.0%-1.5% Oil working condition Working condition Normal condition WG I WG II WG III Every 5,000 km Every 10,000 km Every 15,000 km Severe condition A WG I WG II WG III Every 5,000 km Every 5,000 km Every 5,000 km Severe condition B WG I WG II WG III Every 5,000 km Every 5,000 km Every 10,000 km Severe condition C WG I WG II WG III Every 5,000 km Every 5,000 km Every 5,000 km Severe condition A+B WG I WG II WG III Every 5,000 km Every 5,000 km Every 5,000 km Severe condition A+C WG I WG II WG III Every 2,500 km Every 2,500 km Every 2,500 km