...or clean em out and put in fresh moly grease,
I did the dorman stretch boots with a funnel. Soften in hot water, a good (dry) grip, and straight downward force. Used a vice bolted to plywood and set on the floor to hold the axle vertical.

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1985 300TD 1981 Scirocco 1.6D conv 1986 Golf 1.6D 2003 Golf TDI