I think you're going to need 2, one for in lb one of ft lb. The valve cover nuts are something like 7 in lb, as are transmission pan bolts, etc. Things like motor mounts and similar will likely be in the 60 ft lb range, so you'll want to get an in lb and ft lb.

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1982 Mercedes 300SD (325k miles)
1986 Mercedes 560SEL (212k miles)
2006 VW Jetta TDI (215k miles)