Usually oil is changed after a certain length of time or number of miles. Depending on driving conditions and patterns, oil can need changing sooner than the OEM recommendation.

Oil sample analysis gives information on viscosity, additive levels, oxidation and contamination, as well as wear metals that can indicate premature wear of engine or gearbox components. Millers Oils can then advise when it’s time for an oil change – avoiding expensive breakdowns.

Commercial vehicle and off-highway

Long haul, start-stop driving in all weather and with heavy loads can take its toll on a vehicle – and in a competitive market with tight deadlines, any unplanned down-time comes at a premium.

Depending on driving conditions and patterns, oil may not need to be changed after the specified distance or time, and unnecessary oil changes can add surplus costs to a business.

Regular oil sample analysis enables businesses to not only monitor the condition of a vehicle’s oil, but also its engine and gearbox. By testing the viscosity and additive levels of the oil, as well as checking for contaminants and wear metals, we can advise when it’s time for an oil change – helping you to both avoid costly breakdowns and unnecessary costs.


In many industrial applications, the sump is often filled with oil then left to run throughout the year without an oil change. Bearings, gearboxes, actuators, valves and ejector pins can start to stick or wear, without the maintenance department knowing.

If the oil isn’t sampled regularly, it’s impossible to know whether everything is running smoothly, or if the machine is on the verge of a costly break down. Frequent oil sampling keeps the maintenance department informed of both the condition of the oil and the machine components, allowing maintenance to be planned around production – saving both time and money.

Sample reports include analysis on:


Viscosity is crucial for optimum lubrication, and can change due to contamination or oxidation.


Oil can become contaminated by environmental factors such as water, dust and debris, as well as by other oils.

Wear metals

Wear metals in the oil offer an insight into not just the health of the oil but the health of the machine components. High levels of a certain metal can indicate that a particular component may need replacing soon.

Additive level

Additives such as anti-wear, anti-corrosion etc. become depleted over time as they fulfil their purpose in the oil.

Buy Kits

Select either the Premium kit which is one sample kit or the Advanced kit which is two sample kits and then proceed to payment.

Please note:  If you have ordered the Advanced Sample kit (2 bottles) you only need to return one at a time.  The second is for you to take another sample and forward to us at a later date.

Our sample kits are available to buy online for UK based customers only – prices exclude VAT. For any further information please call our sales team on 01484 713201.

For International inquiries please speak to your country distributor or contact the International team for more information on access to kits abroad –

Which kit do you want?

If you would like more information on the range or how to purchase it please complete the below form:

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