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Message: Re: Keep checking and others here will opine, but I'd say there was still lots of pressure after an hour

Changed By: Guenter in Ontario
Change Date: October 08, 2011 09:36AM

Re: Keep checking and others here will opine, but I'd say there was still lots of pressure after an hour
[quote=jjspike]
I left it overnight and just checked again this morning and there was a slight release in pressure release. The coolant level was about .75" above the MIN mark and there was no fluid beneath the car. Looks like the removal of the cap when the engine is hot/warm causes the loss of coolant from the little hole that hangs off the top of the filler tube. Can anyone confirm my theory?

Cheers![/quote]

Since liquids expand, the coolant leve l when warm / hot will read higher than when cocold. That's why hot coolant can bubble/boil over and scald you. If you're almost at minimum (probably because of what you lost), I'd add a cup of [b]distilled[/b] water - enough to bring it about half way between min & max. There are almost 6 gallons of coolant in the system, so a cup or so isn't going to water it down by any significant amount.

Original Message

Author: Guenter in Ontario
Date: October 08, 2011 09:35AM

Re: Keep checking and others here will opine, but I'd say there was still lots of pressure after an hour
[quote=jjspike]
I left it overnight and just checked again this morning and there was a slight release in pressure release. The coolant level was about .75" above the MIN mark and there was no fluid beneath the car. Looks like the removal of the cap when the engine is hot/warm causes the loss of coolant from the little hole that hangs off the top of the filler tube. Can anyone confirm my theory?

Cheers![/quote]

Since liquids expand, the coolant leve when warm / hot will read higher than when coold. That's why hot coolant can bubble/boil over and scald you. If you're almost at minimum (probably because of what you lost), I'd add a cup of [b]distilled[/b] water - enough to bring it about half way between min & max. There are almost 6 gallons of coolant in the system, so a cup or so isn't going to water it down by any significant amount.