toilet clogging

[kart racer]

I have a 2020 Redwood 400LT. The toilet in the full bath clogs up. Even when no paper is put down it. Any idea why?

[wintertree]

Not familiar with your rig....but toilet backups can happen from various reasons...most common is poor design / shape of the drain line heading to the holding tank...I have seen some twist and turn with too many joints and direction changes....any of which can get a hang up...our build up of waste...causing problems....If it worked well originally then a build up some where could be the issue..."snaking" this line may be your only option to get things moving again...If you are not familiar with this procedure...get a tech to do it...as damage can be done easily....
Remember to flush with plenty of water....Always....so the line is properly cleared after use...proper TP helps also
Good Luck

[travelin' texans]

Rather than a snake I'd recommend a piece of water hose you can discard after use. With moderate pressure work it up/down the toilet drain with the valve open connected to a sewer connection til clog has cleared. Using a sewer snake into a rv holding tank could be damaging to the plastic tank.
As for proper toilet paper, any "septic safe" 2 ply will work just fine, expensive rv specific toilet paper isn't necessary.

[XCMARK]

you most likely have a pile of paper/ solid poop / female hygiene piled up at the base of where the pipe drops into your tank. Use the hose as stated above, its the fastest way to get back to a clean tank. every flush that has paper and solids fill the bowl 90% full then flush and don't let the girls flush there products! Keep the black tank valve closed until your more then then 1/2 full in the tank. then connect your tank flush to your tank , turn it on and dump the tank . close the valve and let it refill to 1/2 ~3/4 full and dump it again. When you travel always have a 1/2 of a tank of water in your black tank, I add some automatic dishwasher soap to the tank for the ride home and the tank is always clean and odor free.

[Blenhardt]

This is a little bit off subject, but immediately after I dump and rinse and before I add any water, I add about one or two cups of vegetable oil to the tank. Since I have been doing this my black tank valve has been easy to open and close.

[travelin' texans]

Originally Posted by Blenhardt

This is a little bit off subject, but immediately after I dump and rinse and before I add any water, I add about one or two cups of vegetable oil to the tank. Since I have been doing this my black tank valve has been easy to open and close.

Hey Bruce!
I also did this to all 3 tanks, but only about every 3rd dump. When I didn't use the veggie oil I added a good long squirt of some brand of dishwashing or laundry detergent to the black tank with about 5+ gallons of water which sloshes around good while traveling keeping clean & odor free.