Best to just get some food coloring, put some in one of the toilets or sinks, and when you drain tanks, through a clear drain fitting you will know which tank goes with the drain pull that the dye shows up with. The next time you are draining tanks, do the same thing to another area.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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