Each step along the way, data quality is assured through our focus on consistent, unbiased, and accurate analyses.

Ensuring Sample Quality

IOM Collectors ship new, unopened containers of engine oil purchased at retail venues across the globe to our world headquarters in Midland, Michigan, USA. Once received, containers are inspected for any possible damage or cross contamination. A minimum of five quarts/liters of each sample is purchased. Samples are cataloged and each is assigned a laboratory sample ID code which contains no reference to brand or manufacturer. Photos are taken of original containers which are digitally filed.

Oil Testing Standards

Once the cataloging process is complete, three liters of each oil sample is poured into a new container and labeled with the laboratory sample ID code. Approximately 10 to 15 individual samples are sent simultaneously to a laboratory specializing in lubricant testing according to ASTM Standards. Each set of samples also includes a reference sample which allows us to monitor consistency in laboratory testing procedures. All samples go through the IOM Test Matrix and are tested in an identical manner to enable direct comparison between samples. As test results are reported, the IOM information management system cross-checks against applicable bench test specifications. Re-testing is electronically scheduled for any samples which fall out of specification. Certain tests and samples are also randomly selected for re-testing to ensure repeatability and reproducibility of test results.

IOM Engine Oil Text Matrix

The IOM Text Matrix consists of all the bench tests required to categorize the engine oil for meeting various international engine oil standards. Bench tests such as the viscosity-dependent Fuel Efficiency Index (V-FEI), Viscosity Loss Profile, Phosphorus Emission Index (PEI) and other advanced measures of engine oil performance are also included.

Engine Oil Data Integrity

Laboratory data is uploaded into the IOM information management system, and electronically translated into IOM Primary Reports. Custom designed computer applications have been developed by IOM to minimize human error. Data is reviewed by a management team prior to publication. As data is approved for publication, it is uploaded to the IOM Data Store where it is now available for purchase online.