Motorcycle Oil Filters The better the oil filter, the longer the life of the engine. Fine metal particles, combustion residues and other contamination in the engine oil can drastically reduce the life of a motorbike engine. That's why Louis only sells high-quality brand-name oil filters. But at some point even the best oil filter reaches the limit of its capacity. So you should change the filter each time you do an oil change. The Louis Bike Database shows you which oil filter you need for your machine.