Thanks! Would it then be better to catch it before the reservoir so any old fluid or gunk sitting farther through the return hose gets pushed out? Now I just need to find an assistant ... hopefully my dad can stop by.
I'll check the mount clearance tomorrow ... I have actually been noticing a growing vibration at idle (door rattles plus this really low humming), which made me wonder more. Either way I definitely need to clean up the PS fluid mess ... it's started to get all over the frame and crossmember and drip on the ground. Oddly I'm not rapidly losing fluid from the reservoir.

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)