I bought the Mercedes oem, because the Loctite wasn't available where I live. Take a look at my thread that has pictures of the sealant and the job. Pages 4 and 5 might be of interest to you starting at post #51:

http://www.peachparts.com/shopforum/showthread.php?t=102977&page=4&pp=15&highlight=loctite

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1989 300CE Astralsilber/Schwarz
1992 300CE Schwarz/Schwarz