Had my leaks repaired last week by a small shop in new Baltimore Mi that Rob from needs wings referred me to. They work on Mercedes and BMW's it was just the seals around the breathers atop the valve covers. Scraped all the old Sealant off and did a real nice re-seal job. Less than 250. Could have saved money has Mark did, but trust me, when I finish with they will leak worse than when I started. So for me, money well spent!!