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Old 05-03-2019, 08:22 PM   #9
Carl n Susan
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Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,359
M.O.C. #4831
My off-side regulator does the same thing. The presence or absence of the sound allows me to know when it is time to fill a tank. When it starts, the main side tank is empty. When it stops, the off-side tank is empty.
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB

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