Most complex systems (such as your car) are repairable. You do not simply throw out something if it is more cost-effective to fix it (or conduct corrective maintenance). However, failures can still be costly, especially if they occur at inopportune times. This risk can be reduced through servicing (or conducting preventive maintenance). The aim of servicing is to eliminate the causes of subsequent failure.
Servicing brings its own set of drawbacks. Firstly, it takes resources that include money and time. These resources include second order effects: money not only needs to include the cost of maintenance, but the cost of reduced operation. Secondly, servicing (along with any form of maintenance) actually introduce a whole new set of failure causes or mechanisms. This may sound counter-intuitive, but it is an unfortunate reality. Regardless of how diligent or qualified a technician is, meddling inherently with a system will do something that risks failure later on.
Getting your servicing intervals (the frequency with which you conduct preventive maintenance) right is a crucial aspect of asset management. Servicing too often or not often enough will actually decrease reliability from below what could otherwise be optimally achieved.
If you have a repairable system that you operate and you are concerned that you servicing regime is not optimized, contact Acuitas. Acuitas can assist in analysing your system and getting your servicing intervals right. We can also predict improvements in both reliability and life cycle costs that will result.