I have an '85 300TD. SLS was rebuilt by PO over 100K ago and is working as it should. Because I know the shocks have not been replaced in the 3 1/2 years and more than 100K I have driven it, I am certainly going to put new bilstiens on the front. I don't know if the rear shocks have ever been replaced.

What I don't know is how much of a "shock absorber" effect the rear shocks have in addition to leveling the rear of the car depending on the load. I imagine the accumulators also smooth things out. So, my question is this: absent leaking, will the performance of rear shocks fall off over time like those in front?

Threads here about wagon rear shocks are scarce, and I have read that if they aren't leaking,leave them alone. But I don't know how much that advice is just based on cost. I intend to keep the car for the long haul, and have ordered a hitch and will probably get a small trailer for dump and Home Depot runs. (Bathroom and reflooring projects on the horizon)

Thanks in advance for your knowledgeable info.

1985 300TD, 362,000 dd