I usually change my oil about every 2750 (I shoot for every3k but it just worked out that way) I use valvoline 10w30(free bulk oil at work) and a mitsubishi filtern p/n MD352626 (also free)
You can never change your oil too much. Oil gets contaminated and breaks down over time. While I haven't read my owners manual the 7500 mile interval is if you don't do things like....stop and go traffic....sustained freeway driving....extensive idleing....long trips....etc. In other words nobody besides my grandma should change their oil at 7500. If you're hard on your car every3k if not I still wouldnt go more than 5k
People who go by the 7500 interval dont have a 2.7 chrysler engine.

About the mitsu filter... sorry,but "FREE" overrides everything!

C-YA

 

if you change a new WRX's oil at 1,000 miles congrads couse you just blew the engine. its harden steel sleaves are 5 times stronger then that of a big block V-8 and come from the factory with special aditives in the oil to help break in those hardend sleves. wait till 6,000 then change. And before going to a full sinthetic use a semi sinthetic to prepare the engine. I have 35,000 miles on my new WRX i change my oil every 2,000 miles now becouse the abuse it takes high rev's bla bla track....... Actualy had a mech. ask if it was a new engine. i dont care who makes the oil if your hard on it "wrx turbo/ heat ex..." the oil is gona break down around 2-3,000 miles sinthetic or not.

 

I second that...it's not "how often" do you change your oil, it's "how much" you beat your engine. If you ride your
engine hard then the more often you'll have to change your
oil. I change mine every 3000 miles religiously and I still
get "damn, when was the last time you changed your oil?"

So now, depending how hard I beat it will determine if I
have it changed at 2,000 , 2,500 , or 3,000 miles.

...and how ever posted saything thre was no difference
changing your oil at 3,000 from 6,000 is nuts. Not with
turbo engines, this is not true at all. Turbo engines
tend to break down oil faster and turbos without turbo
timers or improper cool down times are more prone to
"having premature" oil changes.

 

Ohhhh.... I forgot. The manufacturer recommends an oil change every 7500 (yes depending on driving style), but you are the expert. The engineers at Subaru must be total retards to suggest that, after all, they have the equipment to check oil viscosity break down and engine wear through real science. You have obviously done some research to prove that turbos break down an oil faster so where is it? I am sure Subaru would have incorporated turbo timers in all our cars if they felt the need for them, after all it is thier money and reputation on the line if all WRXs all need new engines at 60k miles because people followed SOA's recommendations.

 

Practices I use for oil in a Turbo engine:

Keep the original factory oil in the engine for 2000-3000 miles, making sure to change the filter every 1000 miles. This will ensure you let the motor develop it's "groove" so to speak. Additionally this will prevent the metal particles from destroying your precious new motor.

Once you have gotten through the break-in period I recommend a fresh oil change to a pure synthetic oil such as Amsoil or Redline, Amsoil being my personal recommendation. Since these two oils are of top quality you can "get away" with only changing the oil every 6000 miles. You MUST still change the filter every 3000 miles regardless if you decide to leave the oil in for 3000-6000 miles.

There is one exception to this. I have found that using the Amsoil Dual filtering setup will keep your oil as clean as a 3000-mile change up to 5000-6000 miles. For myself I run this setup and I change my oil and filters every 5000 miles and I ensure that I clean my air filter at the same time (or replace). It makes it easy for me to work with round numbers and doing everything at once.

This is just my opinion and nothing more, although my opinion has been shaped by years of being around the racing community; it means absolutely nothing when it comes to YOUR CAR.

P.S. A turbo timer or self-discipline can go a LONG way in saving your turbo and your oil. Use your brain=save your car.

-Steve Signorelli

 

"Keep the original factory oil in the engine for 2000-3000 miles, making sure to change the filter every 1000 miles.
Once you have gotten through the break-in period I recommend a fresh oil change to a pure synthetic oil such as Amsoil or Redline, Amsoil being my personal recommendation. You MUST still change the filter every 3000 miles regardless if you decide to leave the oil in for 3000-6000 miles."


LOL OMG wow what kind of "RACE TEAM" are you on?? or around lol.. list of dumbass thing ever said..... #1. U change your filter but leave the oil.hmmmm tell me how i realy wana know?? #2. You go from straight petro to sintec oil on new engine?? on a old one at that you should always semi sin to prepare it. lol can you say kaaaabboooooommmmmm.... yea couse thats what your engine is going to do couse its hard sleeves are gona SCHOOORCH get hot strech and drag so fast the crank will snap. Hopefully a piston will come out and smack you smart again "or for the first time" i can stop hear you get the point aye?? probly one of those chevy guy's.

 

Silver STi

Do some research on a REAL synthetic oil (castrol syntec does not count as real) before you start this nonsense about not being able to go from petroleum-based oils to synthetic.

There is one thing I should have mentioned about the "switch", you should always use an engine flush provided by the synthetic oil manufacturer to remove any petroleum residue during the break-in.

I was kind enough to provide my insight on the issue and provided a disclaimer that YOU do to YOUR car whatever fits your needs. I need my engine to last. So I follow what I posted.

If you have something positive to contribute, be my guest.

Otherwise, stop being a troll.

-Steve Signorelli