My 116 300SD has a strange oil leak. I have looked and looked for it. It seems to be comeing from the front of the injector pump. It runs down to the oil pan. It is not diesel fuel because it is black. I cannot spot this leak and it is driving me crazy. I am taking it to the dealer next friday for its 15,000 mile valve adjustment and motor mounts. How hard are the motor mounts to change? I have heard putting a block under the oil pan to jack up the engine but this worries me. I could save alot of money if I could do it myself.

Thanks.
Dieselman