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Old 07-15-1999, 05:41 PM
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Join Date: Apr 1999
Location: N.E. Ohio
Posts: 152
My 1987 300e with 60,000 miles has developed a leak in the AC copmressor. My independent tech says I should have the compressor replaced with a rebuilt one and change over to the new refrigerant. My questions are: is this a good time to do this? Can I just add freon to the system? Is 12 years a good lifespan for a compressor? Is the new refrigerant as good as freon? And finally, what would be a ballpark cost for this job?

Thanks in advance.

1987 300E (60,000 mi)
Old 07-15-1999, 08:51 PM
Michael's Avatar
Join Date: Jul 1999
Location: CT, USA
Posts: 2,699
I'd caution you on the upgrade; my bro-in-law has a '88 300TE (as do I), and when his compressor ent he switched to R134a. Never did get nearly as cold, so when the secong compressor went after only a year, he switched back. Get a few opinions, but I know I'm gonna keep mine on the old stuff.

Old 07-15-1999, 09:05 PM
Jason Alexander
Posts: n/a
If you're replacing a compressor I would advise using a reman unit from Mercedes to safeguard against problems later. That would also be the perfect time to switch to HFC-134A. If the conversion is done correctly you should have no problems with reliability. And yes, you may feel a temperature difference when the system is functioning in high temp and high humidity conditions the vent temp may be as much as 10 degrees higher.

ASE Master Technician, Lead Technician for Deutsch American Inc. Over 6 years of Import Service-specializing in German Automobiles.
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