Well, I just got me a 24' 1994 Gulf Stream Innsbruck with a queen bed in front, and bunkbeds and bath in back and, what may be the original ID plate has been nicely oversprayed and is unreadable. Darned if I can find out what the fresh, grey, and blackwater capacities might be on the Internet. Don't even know the model designation, so I doubt Gulf Stream would be pleased with a call on an 18-year-old "something". I hope to boondock quite a bit, and soon, so it would be good to know beforehand.
Aside from filling the gravity inlet with a bottle, gallon by gallon, it would be nice to find out in some easy way. I suppose I could then run the shower until the freshwater tank is empty and then feed in additional gallon bottles 'til the shower drain starts to back up. I suppose I could then rinse and repeat to try to top off the black tank, counting gallons manually added. Anyone know an easier way? Oh, and the method of simply topping off the black water tank and then carefully capturing and counting gallons at the waste valve does not appeal, thank you... though I must admit it'd make one heck of a YouTube video.
Thank you for any ideas, experience, or data.