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Maintenance and service

Long-lasting lubricant use and optimised oil care

Oil changes depending on operating times, as performed in line with the change intervals set out in the manual, are of course part of regular maintenance works. However, these largely inflexible periods between changes barely take into account the specific operating conditions for the particular machine or facility.

The perfect time for an oil change

If oil is changed too early, this puts strain on the environment and, as a result of increased downtime, work, procurement and disposal costs, on budgets, too. If oil is changed too late, oil-related damage may already have occurred. Service and maintenance companies have equally made it their business to optimise oil change intervals and therefore extend operating times of machinery and facilities. An oil analysis and subsequent diagnostics of the individual values recorded indicates impurities, abrasion or products of ageing oil. They reveal necessary oil care measures.

Companies who specialise in machinery maintenance and care use oil analyses as a precaution and for early damage detection. The allocation of wear parts to components in the oil diagnostics (e.g. iron and chromium are typical for roller bearings) make it easier for them to investigate the causes of irregularities.


They plan necessary repairs based on the condition of the oil determined (e.g. decomposition of additives) and perform oil changes based on the condition. The downtimes caused and the maintenance outlay resulting from the oil change are thereby reduced, as well as the costs.

The service life of oil in hydraulics and oil circulation systems can be extended by means of oil care measures. Companies which offer lubricant care as a service perform oil analyses for system oil fillings. Based on purity checks, they then perform system cleaning measures, such as filtration or removing water from oil.


Although oil level, temperature, operating pressure and water can be checked using sensors, time and again, fluid management companies continually return to the OELCHECK all-inclusive analysis kit. In doing so, they benefit not only from analyses performed precisely and rapidly, but also the extensive expertise of the experienced OELCHECK tribologists.

According to lift manufacturers, hydraulic oil, which is used in hydraulic lift systems, should be changed once every five years – with the downtimes and high costs that entails. OELCHECK recommends oil analyses instead. Regular analyses reveal unusual changes in oil in a rapid, cost-efficient manner. Ultimately, most disruption to hydraulic drive units is caused by polluted hydraulic oil.


Oil analyses can also reduce lubricant and maintenance costs significantly for refrigerator oils. Irregularities such as an excessively high water content or other impurities can also be detected early.

Recommended analysis kits in maintenance and service

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