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Technical support

ADOC Marino

Evaluates the widest range of used marine diesel engines

Just by regularly analyzing samples of your lubricating oil, the ADOC Marino system can evaluate the condition of your machine by detecting any possible faults. This allows us to prevent any potential damage occuring in the future.

What is ADOC Marino?

It is an exclusive Repsol service. By analyzing the oil, we can determine the condition of and changes in your engines, issuing an appropriate diagnosis in each case. The most important parameters of the lubricant are evaluated, adapting the tests to the requirements of engine manufacturers.


ADOC Marino encompasses a wide range of diesel marine engines, from small four-stroke engines to giant, high-power two-stroke engines, taking their peculiarities into account in each case.


This service is suitable for large stationary engines used in diesel cogeneration. It is also possible to take two samples in the case of engines that use an oil purifier—one before the purifier and another afterwards—to evaluate its efficiency.

How can I use this service?

If you are already a Repsol customer and want to use the ADOC Marinos-Cogeneración system, all you have to do is contact Repsol's sales team. Your sales representative will provide all the necessary information to start using the system, send samples, and consult results reports.

Registering a sample in the web app and sending samples

You can register the samples that you will subsequently send to the laboratory for analysis on the web app. You must provide all the information requested in the app that is required to process the sample and issue a diagnosis, including customer details, facility, engine, oil data, number of hours of use, daily replenishment information, and any other information regarding the lubricated machine.

Sending the sample by post

Repsol will provide you with the following items:


  • Special containers for sample taking.
  • Labels with barcodes to identify the samples.
  • Cards to send information on each sample, with the instructions to be followed when taking the sample.
  • Postage-paid envelopes to send the samples to our laboratories.     


If you send the samples by post, you must provide all the information requested in the card that is required to process the sample and issue a diagnosis, including customer details, facility, engine, oil data, number of hours of use, daily replenishment information, and any other information regarding the lubricated machine. Next, you must put the bottle and the card inside the approved postage-paid envelope, ensuring that the sample is correctly closed, and send it by post.

Receipt and processing of the samples at the laboratory

The received samples and their cards are registered at the laboratory. Each oil sample is classified and then entered into the system using a barcode scanner. The information contained in the card is introduced into our database.

Consult the results interactively

There are two different ways that you can consult the results of the ADOC Marino system analysis: through email or directly on the interactive portal services.

What information does it provide?

For each sample, a report will be issued containing the current results and those of previous samples. The system issues a diagnosis mentioning any abnormal results, presenting the possible causes of the failure and, lastly, suggesting possible alternatives to verify the failures or actions to repair them. In normal situations, the system suggests lengthening or shortening the oil change interval or provides data for sending a new sample.

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