Dilution doesnt clean anything out of your system. Think about the word: Dilution. Think of oh, lets say Kool-aide. lets say you want to test a 5 gallon pitcher to see if there is any kool-aide in it. you start with an inch of kool aide in the bottom of the pitcher. taste that and sure enough, theres gonna be kool aide in it. Now add 5 gallons of water- taste that and it will taste like water and be clear as water-- but guess what, that same amount of kool aide is in that jug. I have no idea what total time accross means??? Aspirin will help you pass any immunoassay type test-- it does not help with GC/MS. dilution will help pass any kind of test BUT, thing is the labs will test for substances that every body has in their system-- dilution dilutes everything in your urine--not just thc metabloites-- so by looking at creatinine level and specific gravity, the lab can see that you drank so much water that your normal chemistry is dilute and therefore you could have thc metabolites in you that the lab didnt detect-- they flag those results as dilute and some times you can retest or sometimes too bad charlie-- your out!