{Chrysler 300} AC refrigerant

[dplotkin@xxxxxxxxxxxxxxxxxxx]

James-

 

I'm with John Grady on this. You are making an error using R12 and my bet is you will regret it. I have 6 antiques with factory air. 

 

We hear experts say that 134 does not cool as well as R12, or not as well because of steel condensers and all kinds of other conventional wisdom that isn't. 

 

2 of them are on 12 because in 20 years of owning them they have never needed to be evacuated, just topped off. If and when either do, they will be filled with 134. 

 

I have a 62 Bonneville with a steel condenser with 134 that delivers 38-42 degrees all summer regardless of ambient or dew point. 

 

I have a 68 New Yorker, completely stock AC system on 134 that cools to Chrysler specs in the shop manual. It cools beautifully. 

 

R12 does not, in my experience, cool better than 134 when the system is in good order. I base this on 20+ years experience with air conditioned antique automobiles. 

 

Danny Plotkin 

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