[QUOTE=RadioTek;2339607]Possibly used for tightening the valve cover bolts??? I know they are prone to loosening themselves occasionally, but you have to be careful not to overtighten them. The torque value is about 4n-m or 11 in-lb, IIRC. Just about "finger tight" or so...[/QUOTE

I never thought about that as an application, because it wasn't really mentioned in the owner's manual. It's like owning a Ponton in the 1950s where they give you a 7mm Allen wrench for loosening the clamp that holds the wheel bearing on if you have to change/grease them after going through a lot of water.

If you didn't know that it was used for that, you'd wonder why you had it.

Unfortunately, no one outside the Forum knows about that, except some guy named Erfurt who lives in Stuttgart and used to pack the tool kits into the cars in the 1980s....

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Strelnik
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1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6