The destruction of the transmission, transfer case and differentials with water contamination
This Toyota pickup was driven by someone who did not care what he did with it, crossing rivers or whatever he came across.
These samples are from the transmission, the transfer case and both differentials.
The first sample is from the transmission. The water has evaporated, but left 10 ppm of sodium and 38 ppm of dirt, causing 255 ppm of iron wear or rust and 18 ppm of copper wear or corrosion.