ah-kay,
Your credibility has long since vanished on this subject. You only look silly with these kinds of childish posts. You might as well do the research and figure out how to help people with AC issues by sharing good information instead of wasting bandwidth with more trolling.

The ability of an automobile to continue putting out acceptable cool after being caught in traffic can be helped by increasing the volume of the system between the conversion point in the condenser and the TxValve. This is the part of the high pressure area where liquified refrigerant is stored. A larger condenser or a larger receiver dryer ( or two being my preferred method ) can store up the work done by the system AT SPEED... and utilize it when less than ideal conditions of air passing by the condenser happen afterwards.

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/showthread.php?threadid=10414

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html