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Two modern vehicles running duracool [message #176056] Sun, 08 July 2012 14:37 Go to next message
hertfordnc is currently offline  hertfordnc   United States
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Registered: September 2009
Location: East NC
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Life is good even at 100 degrees.

A few weeks ago i bought a case of Duracool and a cheap vac pump.

I got my 06 Honda and the 01 Expedition cool and happy as of today.

I'm confused about Expedition though- it has a front/rear system, it should take something like 60 oz of R134 but it only took about 16 oz of Duracool to get it running cold with pressure around 25 psi.

Which brings me to my other question, we are shooting 20 PSI at 1500 RPM, right? But at what outside temp? It's 98 degress here right now.

thanks

Dave & Ellen Silva Hertford, NC 76 Birchaven, 1-ton and other stuff Currently planning the Great american Road Trip Summer 2021 It's gonna take a lot of Adderall to get this thing right.

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Re: Two modern vehicles running duracool [message #176083 is a reply to message #176056] Sun, 08 July 2012 18:54 Go to previous messageGo to next message
John Sharpe is currently offline  John Sharpe   United States
Messages: 489
Registered: February 2006
Location: Texas
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Senior Member
Quote:

......Duracool...what outside temp?


20# is optimal for the R12 system in the GMC motorhome that's in a low humidity area after the system has stabilized and is using recirculating air. If you are in high humidity, 25# may be needed to keep the system from freezing up. Your systems designed for 134A will probably differ. Whatever makes it COLD is good. Ambient outside air temperature affects the high pressure much more than the low pressure that we monitor with Duracool. If it's COLD don't worry about it as there are no charts for specific american vehicles using R12a. Shocked

John Sharpe
Humble,TX
'78 Eleganza TBI
'89 Spectrum 2000 MPI V-10
'40 Ford Panel Delivery TPI
johnasharpe@gmail.com

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Re: Two modern vehicles running duracool [message #176094 is a reply to message #176056] Sun, 08 July 2012 20:50 Go to previous message
roy1 is currently offline  roy1   United States
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
Senior Member
hertfordnc wrote on Sun, 08 July 2012 12:37

Life is good even at 100 degrees.

A few weeks ago i bought a case of Duracool and a cheap vac pump.

I got my 06 Honda and the 01 Expedition cool and happy as of today.

I'm confused about Expedition though- it has a front/rear system, it should take something like 60 oz of R134 but it only took about 16 oz of Duracool to get it running cold with pressure around 25 psi.

Which brings me to my other question, we are shooting 20 PSI at 1500 RPM, right? But at what outside temp? It's 98 degress here right now.

thanks

ninety degrees leave it as is if you don't want to mess with an iced up evaporator.

Roy Keen Minden,NV 76 X Glenbrook

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