Is it normal for refrigerant to still be moving around inside the drier after the a/c and car are turned off. I noticed this today while looking at the sightglass with the car off.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual

Yes...the high and low pressures are equalizing. Then, when you start the car and turn on the A/C, the low side goes down and the high side pressure increases.

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1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible

Oh I see. Thanks for the info.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual