Check Fluid Level and Condition (All Vehicles): Notes
WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
The vehicle should not be driven if the fluid level indicator shows the fluid below the minimum fluid level mark or internal failure could result.
If the vehicle has been operated for an extended period of time, at highway speeds, in city traffic, in hot weather or while pulling a trailer, the fluid needs to cool down to obtain an accurate reading.
The fluid level reading on the fluid level indicator will differ depending on operating and ambient temperatures. The correct reading should be within the normal operating temperature range.