Quote:
Originally Posted by mbbuff
says that Freeze 12 is totally compatible with R12, and works just as good.
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Put it in an MB (such as this 560sel) after running R12 and let me know what you think. It doesn't cool nearly as well, especially in a volatile climate. Well basically from the middle of the 48 on down.
These cars were designed in Germany, ever checked the latitude of Germany vs the US?
Hot days to them are not hot like they are here.
Girlfriend of mine lives outside of Moscow, how to her is in the low 80°F area. That's downright pleasant to us.
MB updated the AC systems constantly in these cars just like BMW did with the E23s of these years. The condensers early were inefficient, so they doubled the tubes for more surface area to dissipate heat (same capacity) around 1985 from what I gather, the aux fans were tiny on the early cars (again, became far larger) these grew around 1984, heck then in 1989 AGAIN MB changed the condenser fan and went to dual fans.
Quote:
Originally Posted by alabbasi
Not sure why anyone needs to convert to R134. R12 is getting cheap these days as fewer cars are using it. I have 4 cans on Ebay for $80.
R134 is the only alternative to R12. Anything else will be a gamble and no shop would knowingly touch your system with a recovery machine if they knew you had put some sort of snake oil in it.
Before anyone says Freeze12.... Freeze12 is 80% R134 so it's not a direct drop in as it's 80% R134 so it won't mix with the oil so R134 is the only real alternative.
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Can't agree more. I tried F12 in my 300sel only because the system supposedly had an evap core leak, it doesn't. So I need to... uh.. have it recovered then recharge it with R12. Cooling is very poor with it unless running down the road, then it's decent.
I have multiple tanks of R12, it's just NOT that expensive to purchase in large quantities (sub $10/lb... that's nearly on par with the 134A at the auto stores). Hell, even like what Al is selling is plenty reasonable @ about $25/lb... a properly rebuilt system shouldn't need an AC service for easily a decade. I'd buy two, maybe three setups like Al is selling and be covered for a while if I had to have my car serviced somewhere.
LASTLY, you guys doing AC work in the summer are going to get reamed. This HVAC stuff needs to be done in the off-season so demand is low and you'll get better pricing on parts and/or labor.