Thread: 1995 C280 A/C Charge
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Old 06-06-2005, 05:34 PM
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Mike Murrell Mike Murrell is offline
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The sight glass theory pertains to R-12; not R-134A.

R-134A sight glasses can run cloudy with sufficient charge.

As James said, you really need gauges to check the charge on an R-134A system. I would not feed refrigerant into a system until I knew what the pressures were.

Lots of stuiff can cause insufficient cooling besides a low charge.

My 2 cents.
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1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"
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