switch to 2WD....

[grape]

hi, me again, since the gas price is hiking, I wonder if subaru impreza is
capable driving on 2 front wheels? since 4WD will consume more gas, and
since it's not winter yet, I didn't see 4WD is needed badly.

my question is: will it damage the driving system? will it cause any
inheretent troubles? does it really save up gases?

THANK YOU

 

[S.C.]

hi, me again, since the gas price is hiking, I wonder if subaru impreza is
capable driving on 2 front wheels? since 4WD will consume more gas, and
since it's not winter yet, I didn't see 4WD is needed badly.

a 4WD car consume more gas because of friction and weight of
transmission components. Disabling rear traction on legacy without
stability control devices is documented for service purposes and is very
simple, just unplugging a fuse, but you will still have transmission
components with their weight and frictions so fuel consumption does not
change

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[B a r r y]

a 4WD car consume more gas because of friction and weight of
transmission components. Disabling rear traction on legacy without
stability control devices is documented for service purposes and is very
simple, just unplugging a fuse, but you will still have transmission
components with their weight and frictions so fuel consumption does not
change

Actually, you plug a fuse IN to disable the rear drive, but only on an
automatic. If the car has a manual transmission, the AWD system cannot
be disabled. If the car has an automatic transmission, it's not driving
the rear wheels anyway if traction is good. I doubt if disabling the
AWD would save much gas.

If the car now gets 24 MPG, and disabling the AWD gets you 25 MPG, you'd
get 12 miles more on a 12 gallon fillup. At $2.50 / gal, that's about
$1.25 a _tank_.

You'd probably save more by making sure that any extra stuff (tools,
trash, sporting goods...)are removed from the car, external drag like
bike / ski / boat racks and ornamental spoilers are removed, the oil is
changed regularly, all lubricants are replaced with synthetics, and the
air filter is clean. You'd also have the AWD automatically available
when it's needed, which is probably a reason you bought the car in the
first place.

 

[l.lichtman]

An additional very important gas mileage enhancer which is easily
neglected is tire pressure.

 

[B a r r y]

An additional very important gas mileage enhancer which is easily
neglected is tire pressure.

I forgot that, but in reality it should be the first thing to check.

 

[S.C.]

An additional very important gas mileage enhancer which is easily
neglected is tire pressure.

tho other is your right foot )