Not necessarily...think about the oil drain plug. Manufacturers are more concerned about you bottoming out and ruining the plug and having liquid pour out than your ability to get every last drop. I'd look at an OEM Toyota parts diagram for your specific year and see if you see it there. If you don't see it, just call up the parts department at a Toyota dealership and tell them you need a new drain plug for your fuel tank because it is leaking. They will either be able to find it or say WTF.Seems it would be at the lowest point of the tank , no ?