Or save the photo to photoshop or similar photo editor, reduce the pixel size or the photo dimensions, just one tiny littel change then save it and you can now use it for a new post.

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!