Bosch's workshop oil filters come as both spin-on oil cartridge oil filters. Ninety-seven Bosch Workshop Oil Filters provide 98 percent coverage for domestic, Asian and European vehicles in operation (VIO) in North America. At an efficiency rate of 97.5 percent in removing dirt and a capacity to hold 13 grams of dirt, these filters help a car's engine oil perform at its best for thousands of miles. By screening out more harmful contaminants than competitive economy filters, the filter ensures longer filter life and durability.