I'm wondering, where does the 15 minutes come from? I had a problem where I would find a puddle of coolant under the radiator when the car sat for a few hours after being driven, but no visible leak while the engine was running. I did the 15psi for 15 minutes test, and nothing. However, if I let it sit pressurized for 18-19 minutes, I would just start to see some seepage along the radiator tank seam. I'm guessing the leak would get a little bigger as the radiator cooled. On Oct 6, 2005, at 1:32 PM, David Teitelbaum wrote: > What your readings mean is some of the air used to make the pressure > dissolved into the coolant. 2/3 LB really doesn't mean much. If you > can pump the pressure up to 14-15 psi and hold it there for 15 min > without seeing the car piss coolant all over then you can be confident > in your work. I would recomend tightening the clamps on all the hoses > you can reach after the car reaches operating temperature. Other than > that it sounds like you're "good to go". > David Teitlbaum > vin 10757 To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/