Is there a low capacity warning light?
I didn;t see anything and I think it's empty as nothing comes out. I need to make some so a gallon will do?
2L coke bottle won't overfill it when empty. If nothing comes out, obviously it's empty or busted.
When my sensor came on, I could spray a little for a while.
I've diverted some of its fluid to spray onto my ATF cooler hoping to cool things down further. So on my long towing trips, I'd carry additional water in 2L coke bottles. This reservoir is pretty sizable. I've seen people say it's actually 4L total.
Anyway, after I fix my reservoir, I won't be filling it with water no more because water might have contributed to my leak issue... ATF cooler spraying wasn't THAT effective anyways. So I'll fill it with windshield wiper fluid after I fix the leak.