Originally Posted by Sulfuric
I have no idea what the original mileage was so I don't have a baseline to compare to, but in about 2 weeks I should be getting an ultragauge (cheaper) so I will have much more exact numbers too. Also, my tank doesn't click when "full" at the pump, so I have to just estimate when it's time to stop filling, which will make filling it rather inconsistent.
It's the pump that has the shut-off. I'm not sure exactly how they work, but it's pretty dependable, in my experience with a variety of Hondas. I believe it's sort of sampling the air and when it senses a bit of splash back the shut off is triggered.
Maybe there's something in the '96 Accord tank neck design that reduces it's effectiveness? Does it overflow before shutting off?
That said, consistant fill level isn't that necessary for accurate calculation: with 2 or 3 tanks any variations will