Freeze 12 - R12 substitute? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-30-2008, 12:57 AM   #11
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Quote:
Originally Posted by 93RedSled-SSE
John D., did you do an ADD or complete change? Do you recall what you had to do for hose and fittings? I know my R12 stuff didn't match up to the can... which is still sitting on the bench. Not trying to steal this, but figured it'* something Red would want to know too. thanks
Hey it'* JDB, not John D.

I did a complete change, pulling a full vacuum before adding Freeze12. I believe the instructions for Freeze 12 say you must do this. You are right, the Freeze12 fittings do not match R12 fittings because they want to make sure you do a complete evac by making you put expensive Freeze12 brand adapter fittings on your car. I wish i could remember exactly what i did, but this is what i remember:

First, 93 bonnevilles have a funky High Side fitting, and i had to buy an adapter at Carquest to make the high side fitting fit my R12 Guage.

Second, to make the Freeze 12 can fit my R12 can tapper and guage, I welded two nuts together...one nut that fit the Freeze12 can, and one nut that fit the R12 can tapper that connected to the guage. The nuts did not have to be airtight because the rubber Oring on the can tapper does the sealing. The nuts only had to keep the Oring clamped to the can. If your tapper is different than mine, this may not work for you.
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Old 04-30-2008, 01:11 AM   #12
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We converted 5 tractors to 134a, and after two post-conversion compressor failures, we decided trying to convert an R12 compressor was futile, and started replacing compressors during the conversion. This is why i shy away from a 134a conversion on my car...might as well wait until my original compressor is toast.
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Old 04-30-2008, 09:58 AM   #13
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Thanks.... J D B
Sorry, bout the other... I thought "John D" sort of had a cool rapper sound to it.
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Old 04-30-2008, 09:05 PM   #14
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Default Re: Freeze 12 - R12 substitute?

Quote:
Originally Posted by red454
Anyone here used Freeze 12? I have been reading up on it and I have not seen anything negative yet...
Haven't tried them. But I would recommend flushing the system and reloading with R134a. I also tried EnviroSafe'* ES12 which worked pretty well too.

My '90 Bonnie is running all stock "R12" components with R134a. (compressor failure dumped the original R12 charge..hence the switch.) Doesn't get as cold as R12, but it is acceptable and keeps the cabin temps bareable on Florida days.
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Old 05-02-2008, 09:08 PM   #15
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I had to recharge my car today so i took some pics of my adapter. Pardon the phone quality!

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The smaller nut had to be sawed in half to allow enough clearance for the Oring in the tapper to seal against the can.

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This is the high side adapter to fit R-12 guages:

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