I totally missed the off and running running.

If it is fifty running and forty and holds off that's close to factory though i think mine was more like Forty five initially off.

It should hold ≈ half overnight i didn't notice if you said how long.

Notwithstanding, symptoms due suggest aging pump if it's old. Divide odometer by five thousand in miles and compare to your average speed

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)