kip,

Isn't that the truth? I'm 55 and grew up in the Texas heat, albeit not in a part of Texas as hot as yours. It gets tougher on this ol' bod with every passing year.

hs_300e,

You are very lucky, or maybe easy to please. Of all the MB's originally equipped with an R12 system, the 124 is clearly the worst candidate for upgrade. Do you know what was done during the upgrade?

If they beefed up the condensor at that time, this would account for the success.

Glad you're comfortable.

Everyone,

It is always possible to achieve good cooling with 134 in a converted system, but at what cost? With a 609 license which is extremely easy and cheap to obtain, R12 can be had for $15 or so a pound. Most systems will use 3 pounds or less. So, for $45 you can buy 3 pounds of r134a for $15 and that leaves you $30 for the other things you need for the conversion.

Even the simplest proper conversion involves flushing, changing recieiver/dryer and adding ester oil. Can you buy flushing agent , an r/d and ester oil for $30? I don't think so.

Now that the cost of R12 is on the down slide, converting an R12 system is just false economy.

Have a great day,