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A/C time is upon us here very soon, and...
Posted by vtsnaab (# 26) (more from vtsnaab) on Sun, 10 Apr 2011 05:38:31
My car will have only a wisp of 134a left in it, as usual.
(Pinholes seem to be the rule in 134a systems for sure.)

After seeing the posts here about it and speaking with the reps I think it is time to switch to Duracool.

Their FAQ page ( http://www.duracool.com/Duracool/faqs.html ) says this:

"To replace R-134a with DURACOOL 12a® you must remove all the existing R-134a. Charge the DURACOOL 12a® using 40% of the original (R-134a) charge weight listed on the system tag. eg; system tag calls for 40oz of R-134a, use 16oz DURACOOL 12a®. Since DURACOOL 12a® is compatible with the synthetic oils there is no need to change or flush your system. DURACOOL 12a® will work with the existing components. Pull a vacuum to at least -10 in hg. If a vacuum pump is not available be sure to use Duracool® DuraDry™ to remove system moisture."

My only question is how much of their refrigerant to buy for a 9K ?
I don't recall seeing the A/C system capacity on a tag on my car.

Can anyone tell me about how much they use of either the 134a or Duracool for a full charge ?
(I've always brought this one back to life with about 2 cans of 134a, but I am careful not to overcharge too...)

I have a vac pump, so I figure a couple(?) of cans of their stuff after using the vac pump and their super-duper leak sealer and I may even be good for a whole summer of real cooling...but I'd like to only order one time, so a better idea of how much should be needed would be a good thing.

Thanks for any info !

mark
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