Problem & Solution
Common among these chassis:
W110 W111 W112 Sedan
W111 W112 Coupe
W113
W108 W109
W114
W115
R107
W116
W123
W124
W126
R129
W140
W201
W202
W208
W210
W220
W211
Watch Kent's Youtube videos to see these explained and demonstrated.
How to Change Mercedes Rear End Fluid: Full Procedure https://youtu.be/cVjYCVxGFhE
Mercedes 300SEL 6.3 Rescue Part 23: Old Engine Oil Inspection w/ Kent Bergsma https://youtu.be/XHsh0wYdgbI
How to Easily Add Life to Your Old Mercedes Benz https://youtu.be/-FW800pJPso