Does anyone know the exact capacity of the Black and Grey Holding tanks?
We have a 1989RD classic; I have checked the reference library, the brochure says "Holding Tanks - 46 Gallons" I'm assuming that's the capacity total for both the Black and the Grey tanks. I would like to know the capacity of each. Does anyone own a 25ft Classic Hilo or similar from around the late 80's to early 90's?

Angel - I'm kinda thinking they're fairly standard across the different models and possibly years. My tanks are 30 gals grey and 17 gals black, or 47 gals total, which is almost your 46 gal figure. The fresh water tank is 30 gals too, and I think most models matched the fresh and grey water tank capacities.

- Jack

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