To Use or Not to Use - That is the Question

[Wildwoman69]

Took this old freshwater tank out of our 1972 Safari a couple of weeks ago. Seems fine, but it's nearly 50 years old.







1. Should we even consider putting this tank back into service?

2. Could it be used as the grey water tank and, if so, how would one go about plumbing it for that use?

3. If we used the old freshwater tank for grey water, we would probably put an above the floor front of trailer freshwater tank in. Do folks like these? Or do they just take up too much space?

Thanks in advance.

Lydia