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					Originally Posted by particlewave  I used to do that, too. Then thermal expansion from the heat in the trunk popped the top off the gallon jug and it sloshed around my trunk for quite a while before I noticed it.    
I guess I should have squeezed the jug a bit to allow for expansion... | 
	
 
Yes, you also might want to do that if you plan to go into the mountains.  I had an inflated air matress in the back of my hatchback once and it exploded going over a pass in Colorado.
Scared the crap out of me!:dance:  Used to drive longhaul.  Multitudes of time, I had shampoo all over my kit because I forgot to burp the bottle.