A few days ago I bought a pair of springs and struts at the scrap yard to fool around with. When I removed one and set it on the ground, hydraulic oil leaked from the hole on the side of the strut(!). So, my question is (no such thing as a stupid question, just another way to learn something), why? I would have thought that the hydraulic reservoir would have been self contained. And, if it leaks out, can it be put back in, or refreshed, to recondition the strut?
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