ROFLMAO, helped a neighbor flush his cooling system with the 7 hour prestone flush one saturday morning. Told him to follow the instructions and go drive it for 7 hours and we'd back flush and refill it. That was at 9 am, he showed back up at 4, parked where he was a 9am and ran into the house without even a howdy do.....heard the bathroom door slam and thats it for about 20 min. Comes back out and says 'Man, you shoulda told me not to drink that coffee before I left or that big bottle of soda, I've had to take a piss so bad for the past 5 hours I was ready to puke''....asked him why he just didn't stop and he said the instructions didn't say he could...so he did'nt. He drove from the pocono's to syracuse NY and back non stop cept for a quick gas stop in a full service station so he would not have to shut it off...went that route cause he remembered I told him that it takes about 3 1/2 hours one way when I'd do my flushes. :laugh3: :laugh3: :laugh3: :laugh3: Oh god, my eyes are tearing remembering that...