Sorry to ask what seems to be a dumb a question; I did my due diligence and searched the fora and read every related post and did not get an answer. So here goes:
Yesterday I moved and parked my bus, initially it was parked at quite a tilt, like this:
That's where the property owner needed it, so he could get other rigs in and out that rent yard space from him.
So, while tilted, there was diesel leaking at a pretty good clip, about 3-4 drips per second. I put some planks under the low wheels to level it off, the leak stopped.
Can the leak be anything else besides a hole in the fuel tank?