I just finished the rear differential fluid change on my 300 D with Mobil 1 75-90 and have a few questions/concerns.

1- The color of the fluid that came out was red, like hydrolic fluid, not the coffee color that is mentioned on a search here. The new oil is a clear/light amber color.
2- The fluid that came out had a yellow "head" on it. I had driven the car about five miles to warm up the fluid and shake up any particles that may be in there. The head seemed to me as not right.
3- The fluid that came out STANK. It was not the normal oil/hydrolic fluid smell, it was putrid.

Is there anything I should be worried about? BTW (as if you could not tell by these questions) I am new to the DIY maintenance world and everything that I attempt on this car is my first time (except oil/air filter changes and those were on gas engines).

__________________
Fantom71 aka Dale
Madison, AL

91 190E 2.6 5 speed 220k miles and this car still scoots!