Benz changed the SLS reservoir in '87. The early wagons had a round reservoir in a different location, closer to the radiator.

Make sure which one we are talking about.

The early 300TD reservoir looks a lot like the reservoir used on the 500E models later in the W124 model run, it has a bracket on the top holding it in place.

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David Hendy
'97 Renntech E60RS
'97 GMC 2500 Sub' Diesel
'95 E300D
'88 300TE
'88 250TD
'84 L/Rover 109