Does anyone know roughly how many 12oz cans of R12 are needed to properly fill a 123 A/C system? I actually have the cert to allow me to buy it so that won't be a problem. All I need to do is have the system leak checked, probably put in a new compressor, dryer and gaskets. The system will be flushed too. My bigger problem is finding someone I trust to do the leak testing. Both cars will blow cold for a while after putting in refrigerant but thay only hold for a week or so. The variuos pressure switches, fans etc seem to work OK.

Jimmy,

You just need to remove the R-134A. The envirosafe will work with the PAG oil but you can change it to the ester based oil so you don't have the moisture corrosion issues. For a ton of info on envirosafe and other replacements do a search on this list: http://www.aircondition.com/wwwboard/ There are A/C professionals on that list who give excellent info on the current state of the art in A/C charging options not uninformed opinions from the R12 is best crowd....

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Bill Reimels
Now down to one:
1972 300SE 3.5 W109 (Euro delivery)

I've looked and some people don't need the EPA cert which would save me some time. I have two buddies that have the EPA cert to attain R12 so I wonder if I should get new R12 or some recovered used stuff.

After some mad searching I've found some hellacious deals on A/C parts (high pressure and suction line for $80!) I need so I'll come down to me gettin0g bent on flushing, evac'ing, and recharing the system only now.





Should be a sticker under the hood that tells ya. My SD is 2.3-2.9lbs I believe.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

I need to do the same thing....mine isn't working and need to get someone to check to see if its got anything in it or not now.

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

My SDL fights tons of I-95 traffic. I keep the shifter in 2nd if it is moving very slow so the engine can do the braking. Thats about it just don't be in a rush because that will only raise your stress levels.

I had no problem last summer on 100 degree days sitting in traffic with the AC blasting. The AC works just OK in these cars but it is good enough.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200