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Old 02-23-2004, 17:25   #1 (permalink)
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Question Optimal cruising speed, NA fairlane, 3 speed

I will going for a long drive 8 hours + and want to know the Best possible cruising speed for NA fairlane 3.9i with 3 speed auto. Too save on fuel.

RPM v's Speed graph or something, approximation, anything...

Thankyou
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Old 02-23-2004, 17:36   #2 (permalink)
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Re: Optimal cruising speed, NA fairlane, 3 speed

The Speed Limit :0)

My EA Ghia with cruise control on doing 100 to 110 klm/hr will do around 6 litres per 100klm, yet around town runs at about 16 litres per 100klm (runs a little rich I think).

3 speed auto, and thats about 2,500 revs or close I think

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Old 02-23-2004, 22:29   #3 (permalink)
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Re: Optimal cruising speed, NA fairlane, 3 speed

6L/100km is over 1000km per tank.. Serious??

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Old 02-23-2004, 22:41   #4 (permalink)
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Re: Optimal cruising speed, NA fairlane, 3 speed

Thats what the instant thingy says on the trip computer, was a coolish morning though, if it is hotter I have seen about 8 or 9 usaully :0), it is really effecient on the highway, sucks around town though, oh well
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Old 02-23-2004, 23:52   #5 (permalink)
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Re: Optimal cruising speed, NA fairlane, 3 speed

Hard to give a generalisation, varies from car to car. Often better at around 80-90 kays but with that long a trip you're better off sticking to the speed limit otherwise it will take forever. Judge it by how far you have to put your foot down on the accelerator. Don't try higher speeds as a ticket will cost more than any fuel you might save!
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Old 02-24-2004, 00:27   #6 (permalink)
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Re: Optimal cruising speed, NA fairlane, 3 speed

I have a NA,do not know what it gets per litre as I use Gas mostly for cruising on the Highway,I sit on 101 and the RPM is 2000,with the 3 speed Auto.
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Old 02-24-2004, 03:28   #7 (permalink)
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Re: Optimal cruising speed, NA fairlane, 3 speed

Quote:
Originally Posted by torpa
I have a NA,do not know what it gets per litre as I use Gas mostly for cruising on the Highway,I sit on 101 and the RPM is 2000,with the 3 speed Auto.
Is that 101kmh? 2000rpm @ 101kmh?
Hows that work?
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Old 02-24-2004, 03:53   #8 (permalink)
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Re: Optimal cruising speed, NA fairlane, 3 speed

Quote:
Originally Posted by torpa
I have a NA,do not know what it gets per litre as I use Gas mostly for cruising on the Highway,I sit on 101 and the RPM is 2000,with the 3 speed Auto.
Sure it isnt 4 speed?
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Old 02-24-2004, 04:57   #9 (permalink)
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Re: Optimal cruising speed, NA fairlane, 3 speed

My ED XR6 gets six liters/100, doing 20kays per hour, when you read it get the average, its a bit more accurate over the entire trip.
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Old 02-27-2004, 13:53   #10 (permalink)
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Re: Optimal cruising speed, NA fairlane, 3 speed

my ex skyline used about 193453284583458 litres per km

No seriously, It used way more then the 302 did..
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