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Can someone tell me when MB switched from freon to 134a? I thought it was industry standard in 1993 but for some reason I though MB switched earlier. I'm in the market for a used MB and if possible I'd like to avoid the cost of dealing with a freon system in the future. I know I can convert it to 134a, but it would be easier to just purchase a model that is already has a 134a system.<br> <br> If anyone knows of websites for me to check for used MBs please let me know.<br> <br> Thanks,<br> <br> Ron Brooks
 

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So which year was it??

91 or 92?![:D] I was inspecting a 92 500 SEL for a friend the other day and it had 134a[?]
 
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