Alright. So a few months ago I bought a 95 Legacy 5 speed, AWD.sedan. It had 255,000 miles on it but the price was right (700$), and had a clean title so I bought it. It has a few mnor problems, like leaking a tiny amount of power steering fluid onto the exhaust so it smokes a tiny bit. and some minor engine oil leaks. But it starts every time, all the electrical stuff works (lights, windows, etc,). I've been driving it non-stop for over two months now and it has been a champ. I absolutely love it. It also had nice new Toyo tires on it and the suspension seems to be good. One thing I have noticed lately though is I'm not getting as good of fuel economy as I would expect. It costs me about 50$ to fill up ( I live in Oregon), and I usually get right at 15 gallons. I know it has a 15.5 gallon tank. by the end of that tank I'm usually at about 300-315 miles on it, which comes out to right at 20-21 mpg. I do a mixture of highway and town driving, leaning more in the town driving majority. I drive 7 miles to work and and 7 miles back every day, with about another 6-7 miles of in town driving on top of that. But I also do a lot of in town driving in between and on my days off. I'm not sure what it would get if I was driving highway miles all day every day. Presumably a lot better. In the car's defense, for the first month I had it I kinda hossed on it a little bit. Nothing outragous, just driving like a boy racer and shifting at about 4000 RPMs. I hadn't owned a stick shift car in about 5 years so I was pumped. Lol. Now I drive very sedately, shifting at about 3000 and not romping on it.
Now I have already taken care of the obvious things that would help with bad fuel economy. I've changed the air and fuel filter and running a bottle of Lucas injector cleaner through every tank, I've changed the oil, changed the transmission fluid, changed the knock sensor (because I had a code pop up), PCV valve, I even run 40 P.S.I. in my tires hoping the higher pressure will help a little. No such luck. One thing though, since the car has so many miles I've been running Castrol high mileage 10W/40. Even though it calls for 5w/30 or 10w/30. I figured with as many miles it has it's not gonna hurt. But I was thinking maybe the heavier oil could decrease efficiency and therefore fuel economy...?
Now you guys tell me, is this about what I should expect or should I be getting better? I figured because it was AWD it would get a little worse fuel economy, but not this bad. The people I bought it from said it got 28 MPG but I just can't see that unless they were driving exclusively highway miles. I did find this here: http://www.fuelecono...ru_Legacy.shtml and it says for my model about 19 mpg in town. Which is about what I'm getting if not a little less.
Any suggestions on what I could do to improve it?
I look forward to your expert opinions.
Edited by nicholi2789, 21 June 2014 - 10:29 PM.