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-   -   better MPG or trashed tranny? (https://www.subaru-svx.net/forum/showthread.php?t=43634)

VICSVX 03-06-2008 07:11 PM

better MPG or trashed tranny?
 
so i hav been readin that are cars get the best MPG at 80MPH...so when i was drivin down I-10, i was doin 80MPH and looked at my tac, it was at 2700 ish....

so my question is since i do about 60 on Houghton (home, wrk, and skoo), would i get better gas milage poppin the tranny into 3rd....the tac is about 2700.

or would i get better milage but a trashed tranny?

Manarius 03-06-2008 07:58 PM

I fail to see the reasoning behind "higher rpms = better gas mileage"

Trevor 03-06-2008 08:02 PM

Quote:

Originally Posted by Manarius (Post 532992)
I fail to see the reasoning behind "higher rpms = better gas mileage"

Agreed. Only higher road speed would probably result in better MPG as mentioned.

VICSVX 03-06-2008 08:10 PM

idk either, just a thought

svx_commuter 03-07-2008 11:01 AM

The best mpg is when the tranny is warmed-up and the torque converter is in lock-up. That would be at 45mph. I used to drive 75-80. Wow was that very fun!! Gas was less and the cops were well less too. I got about 23 mpg or so. So now I drive slower around 65 tops and less and get 26mpg. Sometimes I get 28mpg. The best speed is 45 mph with TC locked-up.

Take care of that SVX,

John

dcarrb 03-07-2008 11:57 AM

Sorry, there's no way any SVX gets better fuel economy at 80 MPH than 60, unless it's downhill with a stiff tailwind. Once you top 55-60 fuel consumption will increase with speed in any car. Running in anything other than top gear sure won't help.

dcb

AlcyoneDaze 03-07-2008 12:43 PM

MOST cars get best gas mileage between 55-60, the SVX has a low geared transmission and superb drag coefficient, it wouldnt be unreasonable to see good gas mileage up to 75mph. just a thought

dcarrb 03-07-2008 01:34 PM

Quote:

Originally Posted by AlcyoneDaze (Post 533150)
MOST cars get best gas mileage between 55-60, the SVX has a low geared transmission and superb drag coefficient, it wouldnt be unreasonable to see good gas mileage up to 75mph. just a thought

I think the high 20s I consistently get on the highway at 70+ is fantastic mileage given the car's size, weight and power, and I agree the credit goes to the gearing and slippery shape. Still, I believe it would do better at 60. Trouble is, I can't maintain 60 long enough to test the theory.

dcb

Trevor 03-07-2008 06:38 PM

Quote:

Originally Posted by AlcyoneDaze (Post 533150)
MOST cars get best gas mileage between 55-60, the SVX has a low geared transmission and superb drag coefficient, it wouldnt be unreasonable to see good gas mileage up to 75mph. just a thought

Should this not read, "the SVX has a HIGH geared transmission." Or is it that up there the terms used are A about F.?:confused: :lol:


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