Or here:
https://www.oilsampling.co.uk/engine-oil-analysis After the wreckage of several gearboxes in endurance, we found a lab' in Belgium to analyse our oil. We then changed from M***l to C*****l for good reasons. Bearing in mind that sometimes oil formulation are subject to change due to environemental concern. Was the case for at least one reference for Va******ne engine oil. A new reference appeared in the catalogue, racing use or closed roads only.