4100 Holding tanks sizes?

[HarleyCowboy]

Can anyone tell me the sizes of the holding tanks on a 2013 4100 King. The Brochure is the only place that list the size. It shows 82 gal Black, and 82 gal Grey. But there are 2 black and 2 grey tanks. So does this mean they are 82 in each balck and grey tank or 82 together? I was thinking of getting a portable tank and I want to make sure it will hold the black water contents.
Thanks for the help.
Kent

 

[jnbhobe]

They are 40gaa each

 

[Snaredrum]

And my valves were labeled wrong. Thats now fixed after i'm like "Man my black tank is running very clear"