Replacing front crankshaft oil seal

[ja17]

Paul, it all depends on the use and the condition of the engine. Figure that the same engine configuration is used in Canada without AC and in Florida with AC. I suspect MB designed for "worst use conditions" (Florida summer traffic with AC on).

Here is another interesting fact. The carbureted MB 250C engine ( w114 Chassis M130 engine) for the USA never used a oil cooler. The same engine in a  250/8 sedan  (W114 chassis, M130 engine) for the USA, always came with an oil cooler. Does not make sense.

[Paul Robinson]

Thank you.  I've still got a lot to learn about these cars.

Yesterday I got my front seal replaced.  The PVC puller as described earlier in the thread worked great on the spacer ring.
Below are pictures of another PVC aid.  It is a drain-waste-vent clean out fitting.  The small end fits on to a 2.5 inch PVC pipe.  The large end accepts the threaded plug.  The large end also happens to be the exact diameter as the main seal so it makes a great mandrel for tapping the main seal home.  
Costs a big whopping 98 cents from Home Depot.