Checking to see if someone has run into this. I've had the Mark since 2004 and never had the reservoir go completely dry. I have found it right below bottom lip where the top and the bottom of the reservior are mated. There is no brake fluid in the booster. I searching the threads there is talk of the cap leaking but can't see it going 3/4" below the max line cause of the cap. Has anyone had this happen and resolved the leak?
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