What is the general consensus as to the range of a 1987 300E?(owned for 1 week - with 90 000 km)

the owners manual says it has a 70 L tank with a 9 litre reserve.

can i expect around 650ish km out of a tank?

what is the most you can get out the tank, i.e. how many of the 79 L are useable?

does the feed in the tank have a raised tube of some sort? my other car has a 75L tank and will run dry at 67L. the remaining 8L are obvioiusly below the feed.

i know it is not a good idea to run it dry anyway but as i dont know the car yet i would like some idea as to what to expect.

ta

kmc