Replacement cycle, it is generally recommended that customers change once every 15000 kilometers. The filter for vehicles in harsh environments should be replaced at least 10000 kilometers(desert,construction site). The service life of air filter is 30000 kilometer,commercial vehicle is 80000 kilometer...
Oil filter has two types(full-flow filter and by-pass oil filter, the full flow filter is connected between the oil pump and the main oil channel,so it can filter out all the lubricating oil entering the main oil channel...