LOL. I thought the same thing....

We compost our sludge. Some of it goes onto the "burn pile" (yard waste, limbs, twigs and stuff). The nasty gunk we give to the local renderer.

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85 300D 3 pedal. Current project.
83 300TD (need rear wiper assembly dead or alive)
84 300SD Daily driver
85 300TD almost 400k miles and driven daily.
98 E300D *sold
86 300SDL *sold and made flawless 10 hour journey to new home.