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Grumparoo's Profile

Real Name: Greg Voelker
Joined: March 2016

In the Garage

  • Cindy

    2016 Mazda 3 s Grand Touring 2.5L L4 GAS Automatic 6 Speed Hatchback
    Added Mar 2016 • 231 Fuel-ups

    Property of Grumparoo

  • 31.2 Avg MPG Best In Garage
  • Pony

    2020 Ford Mustang GT Premium 5.0L V8 GAS Automatic 10 Speed Convertible
    Added Mar 2021 • 74 Fuel-ups

    Property of Grumparoo

  • 20.9 Avg MPG


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Recent Activity

from Grumparoo (View All)


Optimal Speed

Every car has its own "sweet spot" of optimal speed to achie... ...

by jorg3

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