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Old 06-24-2019, 12:14 PM   #16
Anker
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Join Date: Sep 2016
Location: Stow, MA
Posts: 918
Garage
A little more explanation.

The issue is that diesel acts as a lubricant for the fuel injection system. Pure gasoline will wash the lubricant away and cause extreme wear.

As long as there is enough diesel oil in the gas/diesel mixture to act as a lubricant you won't damage the car.

Of course, its better to be safe than sorry.

I doubt there was any damage to the rental car that started this discussion. 20% gas should have enough lubrication left.
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