Yes, you can trade in an old RV. There are a few things to consider when doing so, however. First, you will want to make sure that the RV is in good condition. This means that it should be free of any major damage and be able to pass a safety inspection. If the RV is not in good condition, you may not get as much money for it when trading it in. Second, you will need to find a dealer who is willing to take your RV in on trade. Not all dealerships are willing to do this, so it may take some searching to find one that is willing. Finally, you will need to negotiate the trade-in value of your RV with the dealership. This can be tricky, as they will likely try to lowball you on the price. However, if you do your research and come prepared with a fair market value for your RV, you should be able to get a good deal on the trade-in.