A/C: How do you tell if R12 or R134a?

06-20-2005, 03:34 PM

boneheaddoctor boneheaddoctor is offline

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Quote:

Originally Posted by J.J.

I bought an '85 MB 300TD with a non-working A/C that I want to fix.

The PO said the car was converted to the new system years ago.

I see no mention of it in the paperwork I received or labeled under the hood.

Is there anyway to verify this car has or has not been converted to R134a?

J.J.

If it has any remaining R134 in the system an A/C shop with a Refridgerant identifier can tell what it is. If it has lost all pressure it needs a proper rebuild and flush so now is a good time to fix it right and use R-12.

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