Expecting an emergency situation is one of the costliest mistakes in fleet management. A vehicle breakdown leads to unplanned downtime, schedule disruptions, additional repair costs, and increased strain on other equipment.
Effective maintenance should not only address breakdowns but also help identify them before failure occurs. Engine and transmission oils, greases, and other fluids play a crucial role in this process. Their condition can indicate wear, contamination, or issues within the components long before obvious symptoms appear.
Let’s consider five principles that help transition from emergency repairs to predictive fleet maintenance.
Principle 1 of 5: Move away from emergency maintenance of the fleet
Emergency maintenance involves repairing equipment only after a breakdown occurs. This approach may seem straightforward but usually leads to higher costs, as even a minor deviation in system performance can cause damage to adjacent components over time.
Untimely maintenance also affects lubricants. Engine and transmission oils, greases, and working fluids may continue to be used beyond their calculated effective service life. As a result, their anti-wear, cleaning, anti-corrosive, and low-temperature properties may deteriorate.
- adhering to service intervals;
- regular monitoring of the levels and condition of working fluids;
- using lubricants of the appropriate specification;
- scheduled checks of high-load components;
- adjusting service intervals according to operating conditions.
Combining scheduled service with high-performance lubricants helps reduce the risk of equipment stoppages and more accurately predict all maintenance stages.
Principle 2 of 5: Minor issues cost more than they seem
Serious breakdowns often begin with signs that are easily overlooked: small leaks, reduced oil levels, changes in its condition, the presence of contaminants, or unusual noises during engine operation.
Individually, these symptoms may seem minor. However, they often indicate system leaks, water or fuel ingress, accumulation of wear products, or deteriorating lubricant properties.
Oil or another working fluid that has lost its necessary characteristics can:
- accelerate wear of friction surfaces;
- worsen heat dissipation;
- lead to the formation of deposits;
- reduce the efficiency of the transmission or hydraulic system;
- shorten the lifespan of bearings, pumps, gears, and other components.
Regular inspections, leak checks, and analyses of lubricant condition help detect problems at an early stage when fixing them does not require lengthy downtime or costly repairs.
Principle 3 of 5: Predictive maintenance is based on actual data
Many fleets maintain vehicles only at fixed intervals of mileage or operating hours. However, equipment may operate under various conditions: on long routes, in city traffic, with frequent cold starts, prolonged idling, or under maximum load. Therefore, calendar or service intervals do not always accurately reflect the actual condition of the equipment.
Additional information can be obtained through monitoring the condition of lubricants. Oil analysis helps assess:
- change in viscosity;
- degree of oxidation;
- ingress of water, fuel, or coolant;
- level of contamination;
- presence of metal particles;
- remaining lifespan of the lubricant.
Such data allows one to see processes occurring inside the engine, transmission, or other components long before a failure appears.
Transitioning from scheduled maintenance solely based on predetermined timelines to solutions based on the actual condition of the equipment helps plan service more accurately, avoid premature oil changes, and not exceed the safe operating period of lubricants.
Principle 4 of 5: Adhering to manufacturer requirements is not just a formality
Not passing a technical inspection or forced removal of a vehicle from service is often the result of systemic deficiencies in maintenance.
One such deficiency may be the improper use of lubricants. Engine oil that does not meet specifications can adversely affect exhaust gas treatment systems. Fluids with deteriorating properties can impact the operation of hydraulic or braking systems, while missed lubrication can accelerate wear on joints, bearings, and other moving parts.
Thus, managing lubricants should not be perceived as a secondary task in the repair area. In a professional fleet, this process should be standardized.
For each vehicle, it is necessary to determine:
- recommended viscosity and specification of oil;
- manufacturer's allowances;
- necessary transmission and hydraulic fluids;
- frequency of lubrication of equipment components;
- intervals for replacing lubricants considering actual working conditions.
Unified standards help avoid incorrect mixing of products, using unsuitable oil, and missing important service operations.
Principle 5 of 5: Drivers are the first line of maintenance
Drivers interact with their vehicles daily and are often the first to notice changes in performance. Harsh shifting, increased engine noise, vibrations, changes in handling, unstable hydraulic operation, or the presence of unusual odors may occur before a fault is detected during a scheduled inspection.
Feedback from drivers should be part of the maintenance system. To do this, it is important to establish a straightforward reporting procedure for deviations and explain which symptoms should not be ignored.
Driving style also directly affects the technical condition of the vehicle. Sudden accelerations, prolonged idling, overloading, improper warming up, and frequent braking can accelerate the aging of oil, increase fuel consumption, and elevate component wear.
Effective fleets combine three components: driver observation, systematic planning of maintenance, and monitoring of lubricant performance.
From scheduled service to predictive fleet operations
Transitioning to predictive maintenance does not require a complete overhaul of all processes. It begins with clear guidelines: proper selection of lubricants, regular checks, recording deviations, and utilizing actual condition data of the equipment.
In such a system, lubricants serve not only a protective function. They become a crucial source of information about the operation of components and help make decisions before a minor deviation turns into a major problem.
Combining technical expertise, quality lubricants, monitoring their condition, and driver feedback helps reduce unplanned downtime, enhance equipment reliability, and extend its lifespan.
