Getting ready to reinstall the springs on my newly welded-in perches (yikes) and reading over the FSM procedure it says to "use installation paste when installing rubber mount" (ie the mount at the top) ... what is that? Is it OK to install without that assuming I don't have trouble getting the rubber into the perch. I don't recall seeing any use of a paste when reading DIYs so I wasn't sure what the purpose and how necessary it is, and if it is, what kind of paste I can use.

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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)