Bad Idea to Have a Passenger with Food Grade Tank?

No really a problem. You'll have someone to talk to on scale waiting for slosh to stop

 

Ditch the weights and lift each other.

 

Sleeper truck, dry bulk trailer loaded with 48k, my gear and my 275# fatazz, only scales 78750, and with a trainee, I'm still under 79k.
Axel weights are another story...
Lemme tell you about that time I got the scale with 37720 on my drives.... That was a bad day...
Though not quite as bad as the guy I watched hit the scale in Corbin with 50250 on his tandems...
Never seen so many DOT cops drop their donuts so fast, and go to meet their hero of the day....

 

Are you worried they are going to eat it all?

 

The places we loaded calcium at had their scales set up so that when you’re parked on the scale they would load the whole load in the rear lid on the trailer. Then we’d have to pull out into the parking lot, reverse and slam on the brakes to get weight back onto the trailer axles. Some products run like water. Some products like salt are heavy and don’t flow much so you load half in the front, half in the back.

With a liquid tank your axle weights could be off if your trailer doesn’t sit level with the truck. But going to work for a large company with uniform specs that shouldn’t be an issue.

 

Running food grade, I think it highly likely you'll see dry bulk as well as smooth bore liquid loads.
I know foodliner runs both, though I don't know if drivers are exclusively one or the other.
Was over on drives because they didn't scale axle weights, only gross, and the driver that loaded was new and didn't know to request axle weights.
Scale house and I had a lively discussion next time I was there...friendly, of course, no need to aggravate the guys that control your wait time...
Most loads are planned out factoring in a given weight for the equipment.
Assuming you didn't eat concrete for breakfast, and aren't smuggling lead ingots, you should be fine. When you scale at the shipper, get axle weights.
It'll tell you if you need to adjust things to roll smooth and safely.
You'll also learn the feel of the ride, how it pulls.
Handy info in lousy weather.

 

Very wise.

 

My empty weight is about 31K and thats with me weighing more than you and your passenger combined, plus I have tools and water/food supplies on board to last me a week minimum. As long as they don't load more than 48K of product I am fine. I don't worry too much about axle weights as tandem axles are fixed and moving the 5th isn't going to affect things enough to be worthwhile.

The few times I was caught with over axle weights the company paid the fines and of course my license is unaffected. I didn't hear anything from the company because I don't control how much product is loaded (we do a lot of pre loade drop and hook) and they don't have a scale before you pull policy in place.

I wouldn't worry about it.