[W126 Coupe] Air conditioning Issues

[Doug Gavin]

Iain Gunn wrote:

> I have been using Duracool for about 4 years now and have no 
> complaints, I have also filled probably 2 dozen a/c systems with it in 
> that same time with no complaints. My 86 560 SEL was converted to 134 
> when B4 bought it and has worked fine for the last 5 years. 
> Surprisingly I have never had to mess with it. My 90 190E 2.6, I 
> topped up this year with Duracool, works fine. The 86 560 SEC Koineg 
> was converted to Duracool. and worked fine for the 3 years I had the 
> car B4 I sold it.
> Duracool Does NOT contain any 134.
>                                                                Cheers, 
> Iain
>
> Some thoughts on the MB AC Freon issues that I thought I'd pass along.
>
>> Just yesterday, I stopped to discuss the seemingly long waiting 
>> period for my '90 SEC to cool down at 95 to 98 degrees ambient 
>> outside temp.with an A.C. specialist that works on my classic 
>> American cars very satisfactorily.  My system is fine, he says it 
>> just takes a little longer in these hot days and I need to be patient 
>> especially when the humidity is high but what he did point out very 
>> strongly was "Do not change this R-12 Freon to R-134 or Freeze 
>> 12.(Freeze 12 contains 80% 134) Suck up the cost of R-12 @$40 a 
>> pound". He suggested that I find R 12 at swap meets and stock pile it 
>> if I'm going to keep the SEC
>>
>> He told me that he has changed the products at the request of  mid 
>> '80s to early '90s MB owners (under protest) and to a person, they 
>> have come back dissatisfied with the cooling capabilities of their 
>> cars.  He has converted my '64 Impala SS and my '71 442 convertible 
>> to R134 and they work fine and he agrees that  they should but the 
>> MBs just don't react the same. He does not have an explanation why . 
>> If others have made the change successfully, I'd be interested as a 
>> general education point in the event I need to consider this in spite 
>> Neils advice.
>>
>> Doug
>> The MB Coupes Website!
>> W126 SEC Mailing List
>> Postings remain property of MB Coupes, L.L.C.
>>
>>
>>
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>>
>
> The MB Coupes Website!
> W126 SEC Mailing List
> Postings remain property of MB Coupes, L.L.C.
>
Good to know about the Duracool!!