Maintenance for a 2004 Subaru Legacy L 35th Anniversary Wagon 5 speed ( EJ259 Cali Spec )
Hi everyone, I was wondering if anyone could tell me what can I do to have my gas mileage back to the original MPG as it was like new? I'm the 2nd owner, 1st owner did not do any maintenance before I purchased it last year and I did most of the maintenance since I have no history of maintenance with the 1st owner. I'm also wondering if replacing the fuel filter would be a good start as well but from what I heard with 2004 models and up, the filter is in-tank type, if so would my mechanic be able to change it since he said he's not sure if it's servicable.