Komatsu 830E haul trucks at a Canadian diamond mine were suffering difficult to predict wheel motor and front spindle bearing failures. This led to unnecessary, expensive failures. Additionally, the design of the GE wheel motor does not include filtration: ferrous contamination was controlled by oil change.

In addition to providing an excellent visual indicator of iron contamination within the wheel motors and front hubs, a large reduction in iron levels was observed in follow up fluid sampling, as shown in the report below. The benefits of cleaner oil are extended oil life, reduced wear and increased component service life. The Mag-Shield^® also provide a visual baseline for normal operation.