Originally Posted by ZeeOSix
Lots of miles (km) on those oil runs - and the wear deviation starts showing up after 10 km. Did they take KV100 and HTHS readings as the miles piled up to see if the 10W-40 sheared down below the 5W-30? Lead wear would be journal bearings I would assume.
The explanation offered by the authors is "The most feasible explanation could be linked to additive depletion. For oil B, after 20,000 km antiâ€wear additives have been almost absolutely depleted (FTâ€IR measurements have been performed to assess this situation) and an acidic attack against Babbitt metals appears leading to the situation previously mentioned. In the case of the LVO, the higher content of antiâ€wear additives, let to obtain a longer period of usage where this corrosive wear is under control, obtaining very low lead wear rates."
Which may lead someone to be cautious with the latest iterations of consumer oil standards....
Lots of miles (km) on those oil runs - and the wear deviation starts showing up after 10 km. Did they take KV100 and HTHS readings as the miles piled up to see if the 10W-40 sheared down below the 5W-30? Lead wear would be journal bearings I would assume.
The explanation offered by the authors is "The most feasible explanation could be linked to additive depletion. For oil B, after 20,000 km antiâ€wear additives have been almost absolutely depleted (FTâ€IR measurements have been performed to assess this situation) and an acidic attack against Babbitt metals appears leading to the situation previously mentioned. In the case of the LVO, the higher content of antiâ€wear additives, let to obtain a longer period of usage where this corrosive wear is under control, obtaining very low lead wear rates."
Which may lead someone to be cautious with the latest iterations of consumer oil standards....