I have a fuel leak where the black box (don't know exactly what it is?) connects to the plate near the injectors on my 99 E300 td. This is the gasket I believe which is just right (standing in front of the car looking in) of the two bolts which are typically marked with yellow. Has anyone tried any additives which may help with gasket "repair".
For what its worth... I've used Delvac 1 synthetic for the last 30k miles and the car was run its first 102k on whatever the dealers typically use.
Thanks

http://www.peachparts.com/shopforum/showthread.php?t=105291

Post #8 has some pictures