2017 Tab 400 grey tank capacity? Anyone who has a 2017 -2018 Tab 400?

lkc001
lkc001 Member Posts: 877
in Heating/Plumbing & Winterizing
Had to do the baking soda/vinegar treatment on my new to me 2017-2018 Tab 400 for slow draining & odor.  Everything - both sinks & shower now draining fast & clear.

My question is what is the true grey tank capacity on this unit?  I found that Nucamps own website was not correct on the fresh water capacity-- on my printed doc it says 22 gallons fresh water & it's actually a 30 gallon tank. So is their grey tank capacity wrong as well? Nucamp says grey tank on my trailer is 18 gallons.  

After doing cleaning procedure I have filled & emptied grey tank TWICE & both times my water meter says 12.7 gallons at which point water starts coming up in the shower drain & water is no longer going down the sink drain, which means grey tank is full.  When pulling the grey tank drain it comes out fast & clear.
2018 Tab 400
2016 Nissan Frontier SV 4x4 Crew Cab

Comments

  • Jilong
    Jilong Member Posts: 87
    I've not measured it, but I believe in the documentation for my 2018 Tab 400, it was listed as a 30 gallon freshwater, 18 gallon grey, and 12 gallon black tank.
    2018 Tab 400 × 2013 Toyota Highlander Limited AWD
  • Jilong
    Jilong Member Posts: 87
    Measuring is always best, but make sure your trailer is level before you do so. The tank capacity is significantly smaller if the trailer is not level and an air bubble gets trapped.
    2018 Tab 400 × 2013 Toyota Highlander Limited AWD
  • lkc001
    lkc001 Member Posts: 877
    Jilong said:
    Measuring is always best, but make sure your trailer is level before you do so. The tank capacity is significantly smaller if the trailer is not level and an air bubble gets trapped.
    My trailer is level 
    2018 Tab 400
    2016 Nissan Frontier SV 4x4 Crew Cab
  • lkc001
    lkc001 Member Posts: 877
    Jilong said:
    I've not measured it, but I believe in the documentation for my 2018 Tab 400, it was listed as a 30 gallon freshwater, 18 gallon grey, and 12 gallon black tank.
    Yes I have the same documentation -- I am wondering if anyone else has actually verified the actual capacity with a flow meter or other means.
    2018 Tab 400
    2016 Nissan Frontier SV 4x4 Crew Cab
  • qhumberd
    qhumberd Administrator, Moderator Posts: 844
    I recall that Travels with Delaney did an episode on this with his 2018 400. measuring the grey tank. 

    Assumed full at 15 gal and totally fully and backing up at 18 gal.

    This goes along with my experience in my 2019


    https://youtu.be/PJxn1sp8pQk?si=NdQrobzsh3RmMu2M



    2019  T@B400 Boondock Lite "Todd"
    2016 Toyota Tundra 5.7 Crew Cab
  • lkc001
    lkc001 Member Posts: 877
    qhumberd said:
    I recall that Travels with Delaney did an episode on this with his 2018 400. measuring the grey tank. 

    Assumed full at 15 gal and totally fully and backing up at 18 gal.

    This goes along with my experience in my 2019


    https://youtu.be/PJxn1sp8pQk?si=NdQrobzsh3RmMu2M



    LOLL. l love the photo—that’s good to know— for whatever reason mine is totally full at 12.7 according to my flow meter so I won’t get the 18 gallon capacity— at least I know.
    2018 Tab 400
    2016 Nissan Frontier SV 4x4 Crew Cab

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