I have a 2008 Fleetwood Discovery 40X. It is supposed to have a 50 gallon gray water tank. I can only put 32 gallons in. Called Fleetwood and they were basically useless. Any ideas?
I know this might be a little hard to do, But measure it and figure the capacity from your measurements. Measurement will most likely be in inches. Multiply length X width X height and divide by 231. That'll give you the capacity in gallons.