14
PREVENTIVE DAILY MAINTENANCE 
E5 E6 E7 
FUEL SYSTEM LEAKAGE 
Check the fuel system for leakage 
including the drain plug of the fuel tank. 
Repair any leaks immediately. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ENGINE OIL LEVEL 
The oil dipstick is situated on the right-
hand side of the engine. Having 
unscrewed and removed the oil dipstick 
check the engine oil level and check 
connections of engine lubrication system 
for leaks. Maintain the oil level between 
the dipstick marks. 
 
 
 
 
 
 
 
 
 
 
COOLING SYSTEM 
Check connections of engine cooling 
system for leaks and coolant level in the 
expansion tank. The expansion tank is 
accessible after removing the right-hand 
side part of the hood. Add the missing 
coolant up to the upper MAX mark. The 
minimum permissible coolant level is 
marked with MIN mark. 
Loosen the overpressure filler 
cap only after cooling down of 
coolant. Danger of scalding!