Clean environment inside the engine is achieved by maintaining intake system, i.e. By maintaining correct level of right grade of oil in air cleaner and changing it as and when required
Malo osamalika mkati mwa engine angakwaniritsidwe posamala magawo onse olowera monga kugwiritsa ntchito mtundu wofanana wa mafuta a engine muchosefera mpweya ndinso kusintha panthawi zonse zoyenera kutero