Well I needed to pull it out of the Jeep and wipe it down anyway. I missed the discussion on leaks but here goes. 
 It definitely drips out the back.  The ends of the gasket leave a small gap and water drips out when laid on it's back. 


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Thanks for doing that test.  Does it only leak when tilted on the back?
It would be interesting to see the results of a Yeti for the same test.
I should do one more test with my igloo where I release the drain with the lid closed and see if it affects the flow rate.  I know my Pelican will drain much slower if the lid is closed.  
- Torg