well in my Mercedes Benz 300TE, which is a station wagon type, the cap is in the back right medical kit under the right hand panel that when you take it off theres a red knob thing that when you press down on it, it keeps the tank lid closed so no one can siphon gas from your tank. hope this helped.
0w-40
need to locate the blower motor on Mercedes 300E 3.0 motor
6.5 litres of 10W 40
The blower motor resistor on a Mercedes 300e is located beneath the blower motor on the Mercedes 300e, if ever it needs replacing.
it is under the hood in the top right hand side
pop out the bulb. replace. Please be a little more specific.
Near the right rear tire
The first step to remove the interior rear view mirror on a 1990 Mercedes 300E is to heat up the adhesive with a heat gun. Twist back and forth as the adhesive melts and pull the mirror from the window.
There are two fuel pumps in a Mercedes 300E
This link has the list of 1990 300e gas mileage. http://www.fueleconomy.gov/feg/bymake/Mercedes-Benz1990.shtml
You can buy it online here: http://www.drivewire.com/vehicle/mercedes-300e/mass-air-flow-sensor/
how to change glow plugs on1997 mercedes 300e