Correct, I meant the "condenser". Like most older cars, our 1985 M-B has a 1-tube copper condenser. The parallel-flow aluminum condensers in modern cars give 30% better cooling, so some owners retrofit one. Some also change from the Harrison R4 compressor (used in many Chevy's) to a modern Sanden 7-piston. I did until the aftermarket bracket cracked, but didn't notice the Sanden worked any better. Our 2002 T&C has a parallel tube but still the AC doesn't work well when idling at a long stoplight. A disadvantage of parallel condensers is that you can't flush out debris like older ones, though most people today just install a new condenser. Many owners think M-B under-designed the AC for the U.S., especially CA Central Valley where I live (110 F days plus evil sun), but the heater is built for frigid German winters, having a monster 3-tube Behr heater core as found in semi-trucks and climate system which disables the cabin fan until the coolant is hot so no risk blowing cold air on rich owners (Germans fear 'une draft' will sicken them).
