• Efficiency - Bosch filters are made of special micro-fibre paper impregnated with synthetic resin that separates up to 99% of all impurities.
• Pressure Drop/Flow - The pressure drop rate shows how easily oil, air & fuel can flow through the filter.  The lower the rate the better your engine can be supplied with the vital substances.
• Life Time - Bosch filters have an optimum balance between filtration efficiency and pressure drop, ensuring they have a long service life.
• The Importance of Filters - This is frequently underestimated.  For financial reasons, many motorists change filters less fequently than recommended and therefore unknowingly damage high-grade technical components of their car or neglect the protection of the vehicle components from pollutants.

All filters should be changed every 15,000km or once a year.  (Refer to the vehicle manufacturers recommendations.  This will ensure long term efficiency of your engine)