[ShrimpBurrito]

My resolution to the problem in subsequent days of travel under the same conditions was cracking the flush vale open slightly, maybe 1/8”-1/4”. I did this with waste in the toilet — maybe 1/2 full — and even after 400+ miles of travel, there was no evidence that any waste crept up into the bowl. And even if it did, just as with the Thetford Electra Magic, it should flow right back down into the tank. That solves both the “Old Faithful” eruption, and the potential tank bursting under pressure.

So going forward, I think my default mode of travel with the toilet empty or with some waste is to crack the valve.

Dave