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With a 4.111 FD and 5th gear ratio of 0.871, and assuming you have a stock tire size of 205/75/15.

At 60 you should be turning 2745 RPM

At 70 it would be 3202

 

I just want to know how much the gas milage would be effected by no 5th gear

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20 - 25%

 

just a guess.

 

put it in 4th and note the rpm. then do the math.

 

 

seems kinda high.. I can't remember but I think 60 is somewhere around 3500 or their about

 

but I thought fuel was based on the throttle position?

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I got my fuel calculation finally 18 MPG however I expect it to go up to around 20-22 while trying to maintain 60 mph.

 

only thing is basing off the current numbers I have I can't figure out how much that would get me from the tank.. around 300 or so?

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I got my fuel calculation finally 18 MPG however I expect it to go up to around 20-22 while trying to maintain 60 mph.

 

only thing is basing off the current numbers I have I can't figure out how much that would get me from the tank.. around 300 or so?

 

Miles per gallon x gallons per tank = miles per tank

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Wouldn't a five speed have a 3.9 front and rear diff gear ratio?

 

Legacy L 2.2 model would. Outback manual had 4.11s.

 

only thing is basing off the current numbers I have I can't figure out how much that would get me from the tank.. around 300 or so?

15.9 gallon tank would net you ~286 miles run dry. Go 220ish and fill it up to stay on the safe side.

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They're assuming you'll get closer to 30 mpg.

You need to hit 25 mpg to get 400 out of a tank if you run it dry. But how often do you run the tank dry or nearly dry before filling up? Realistically you fill up with about 3-4 gallons left in the tank. That's about what you have left when the gauge hits the E mark.

 

So figure 12 gallons at 25 mpg = 300 miles between fill ups.

 

I've taken my sedan on several trips where I went 400+ miles on a tank. Could have gone farther too. The last one I was at about 415 and filled up with ~12.5 gallons.

My wagon barely made 300 on the same amount (12.5 gallons) during the trip I took a few weeks ago.

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the above statement could be 8 gals which would be over 34 mpg. that is not likely, but maybe possible.

 

how many gallons did you put in the tank?

i put in 12.61

 

About to get gas again gas resting on the e line with 280 miles

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