once you see --- you got about a gallon and a half left.....
my starvation issue happened with 3 dots and a nice long fast right hander off memorial here in houston. as the image shows the green line means im on the gas, yellow is where i start to sputter and luckily coast to my final spot indicated in red. i tried to start it for 3 minutes but the 100 degree heat had me and my dog hailing a cab to the gas station.