Don't forget to fill up with premium unleaded fuel!

I have thought of using the economy gauge for the same purpose, but the only one I have found was for a W126, and that was before I got my W126.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine