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Old 04-02-2010, 12:45 PM
 
1,309 posts, read 2,887,443 times
Reputation: 941

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I see these kits in auto parts stores and even Walmart, and have always wondered if they work.
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Old 04-02-2010, 02:02 PM
 
10,485 posts, read 22,547,424 times
Reputation: 6611
They did not work on any of the cars I have tried them on. Bottom line, they are a waste of money IMO.
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Old 04-02-2010, 02:06 PM
 
Location: New Jersey
2,715 posts, read 9,117,088 times
Reputation: 1383
My 92 Accord has a A/C leak. Instead of paying lots of money to get it fixed, I buy a can of R134a to recharge it once a year. Works great, but I have to do it every year, but easy to do.

Never tried any leak sealant.
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Old 04-02-2010, 02:17 PM
 
Location: Columbia, California
6,662 posts, read 25,329,136 times
Reputation: 5066
Usually if the AC is not working it is from other isues like leaky hoses or bad pumps. I just let a AC shop I trust fix it.
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Old 04-02-2010, 04:37 PM
 
3,071 posts, read 7,441,689 times
Reputation: 1619
Thats stuff is made for people who are selling a car that has ac leak down issues. It seals it up long enough for the deal to be made.
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Old 04-03-2010, 12:18 AM
 
Location: Chicago
38,691 posts, read 86,783,990 times
Reputation: 29355
It typically works for a week or two, after which you have a decision to make: fix it right, or keep putting refrigerant/sealant in there every couple of weeks until there's so much sealant gunk that the whole system is eff'd up and even the temporary fix-it crap won't work any more.
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Old 12-28-2015, 05:17 PM
 
Location: Oceania
8,623 posts, read 5,891,490 times
Reputation: 8318
I converted my 93 Cadillac to R-134 last year but those old systems weren't engineered for that junk. R-12 gets colder.
I have heard and read about Dura-cool and will try it in my truck this spring. Duracool®.com 2004 - Duracool® is The Recognized Leader In Hydrocarbon Refrigerant Technology

If all goes well I will do the Caddy as well.
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Old 12-28-2015, 09:16 PM
 
16,476 posts, read 17,501,756 times
Reputation: 23521
Quote:
Originally Posted by Nativechief View Post
Thats stuff is made for people who are selling a car that has ac leak down issues. It seals it up long enough for the deal to be made.

Lol. I actually have a freon leak detector. Let a buddy borrow it to check a car he was looking at. That fresh recharge was leaking very nicely. The seller wasn't very happy. But neither was my buddy with the seller.
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Old 12-29-2015, 11:25 AM
 
330 posts, read 405,417 times
Reputation: 336
Worked for me. I bought a 93 LS400 with 240K miles and ac did not work. I found out there was still some freon in it which means no moisture in the system yet. Luckily 93 is when LS400 converted to R134 freon so I bought a kit with a leak sealant. It's been two years and still working very well. If you have a VERY slow leak it's worth a try.
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