Review on ⛽️ Camco Rhino RV Tote Tank Gauge: Prevent Overfilling with Universal Compatibility (39012) by Ron Patel

Strong and durable. Easy to manoeuvre. I don't like that the intake is about 14 inches off the ground. This makes it difficult to effectively empty the gray tank. I would recommend that you measure your tank power and if you are a little over 14 inches off the bottom you are spot on. I've found that most vans and trailers are 10 inches or less off the ground. In this case, you need to use a longer hose, then fill the hose, close the RV tank valve, and then increase the length of the hose each time to empty the waste into the portable tank. No Bueno, but works in a pinch.