How many gallons of gas when at "reserve" marker?

[scorp508]

In my '94 I'm noticing when the fuel gauge reaches reserve, I am only able to get about 13.5 gallons of fuel into the tank. What are others seeing? My '87 with the same size tank usually accepts around 18 gallons, give or take, when it hits reserve at something like 50 miles of range to go. Unfortunately, I'm trying to fix a flashing SYS on my 94 central dash display, so I don't have access to the digital range at this time.

I've read Marc's article on heavyweight Z's, but it sounds like the issue was fixed in late '93 and subsequent cars should be able to use the whole tank.

http://www.zr1specialist.com/HAT%20W...0discovery.pdf