As had already been said, low/empty tank is a problem waiting to happen. We always store our MH with a 'full' tank. I also use one of several products to condition the fuel for long term storage. So far have not had an issue.
The 'other' reason to store with a full tank, is that we always have a safe place to 'retreat' to when/if something goes bad. If there is a major earthquake, power outage or if there is an issue with our house, we can always goes to the MH.
2009 38' Diplomat
CSM- retired, wife as co-pilot
Reka & Ali providing security (our 2 labs)