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Old 11-17-2008, 09:48 PM   #10 (permalink)
Oval_Overload
24.27 lbs per gallon Co2
 
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Join Date: Aug 2008
Location: Minneapolis, MN
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Unicorn - '12 Nissan Versa 1.8S hatch
90 day: 31.9 mpg (US)
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Why wouldn't there be fluid pressure? In D and 1, the entire drive-line is locked in gear and rotating due to the car descending the hill. In this case, the tranny should be getting more pressure than it would in normal driving because the crankshaft turns at 2500 rpm in 'D', rather than 1000 rpm if i were to descend the hills in 'O/D' with the hydraulic brakes.

I'm assuming the tranny pump is driven off the input shaft, but please, correct me if I'm wrong about any of this.
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