Gas mileage dropped about 2 miles per gallon after having ATF changed on 2008 Outback 2.5i. Any idea why?

changing ATF on a 2 year old Soob?

what are your miles.

Subaru requires at 30,000. 41,000 at this time. Been trying to figure this out for a while.

Did you use the proper fluid?

 

How did you determine the MPG number?

 

May just be a coincidence as 2mpg is hard to say is anything big. A slight change in driving habits can do 2-5 mpg difference.

 

Check tire pressures.

 

nipper

probably used the wrong ATF, its a special from subaru only blend.

Had to start filling up about 35 miles sooner per tank was first clue. I also keep mileage records and use the dash readout.

They ordered Subaru ATF.

How far have you driven since the fluid was changed?