Home made valve wrenches
Injector sockets (I prefer the cheap open end I ground down)
Stock Tool pouches in both cars
Oil changing wrench (again, I prefer generic tools for this)
Pair of Dash pulls
3 123 factory manuals, printed in 1982
A few more MB branded Hazet sockets and wrenches that I haven't had to use, yet

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1985 300D-189k The 'UD', Ivory and Pinkamino
1979 300D-211k Dark Gray, Parchment
A 1980 Harley-~166k and
A 1994 Ford diesel pickup-349k and
A 1990 gasser Volvo wagon-145k