See also:

High outside temperatures
If DEF heats up to over 122 °F (50 °C ) for extended periods, e.g. as a result of direct sunlight on the DEF reservoir, DEF can decompose. Ammonia vapors develop as a result. WARNING When o ...

2011 Mercedes-Benz E-Class Review by Kelsey Mays
America's fickle regard for station wagons hasn't meant much to most luxury automakers, who've continued to offer a steady stream of wagons and wagonlike cars. The latest example is the Mercedes-B ...

Important safety notes
Service products include the following:  - fuels (e.g. gasoline, diesel)  - additives for exhaust gas aftertreatment (DEF)  - lubricants (e.g. engine oil, transmission oil) ...