I don't know how similar our cars are, but in a 74 280C I can go a little over 20 miles when the light comes on (tried it once
. That's a little more than a gallon at about 17 mi/gal. So I'd guess the reserve is maybe about 5 liters. The tank is about 15 or 16 gallons.
I'd be interested to hear how much fuel is left for an 84 300SD when the light comes on if anybody knows. Somebody told me it's bad news to run out of fuel in a diesel. Does anybody know what that is all about?
Santa Barbara, CA