Bearing corrosion in vehicles stored for long periods

The engine that is only run for short periods to charge the battery, or not run at all for a month or more is susceptible to high rates of corrosion of the bearings. This shows up as lead in the used oil analysis.

In this example we show a Toyota 4Runner turbo diesel that, at the time of these reports, sat for a month or more without running, or sometimes was started and run for 20 minutes or so to charge the battery.

The next to last sample (november 26), marked in yellow, shows 13 to 20 times what could be considered normal for Lead wear

The top sample was taken when the car had been used normally for 6 months and then stored for 1 month.
It should have been stored with clean oil to have fresh additives to fight the corrosion.