Steven2k

replaced the filter. some oil spewed out, but nothing major like my previous car.

7.5k? are you sure about that buddy? i've been doing it at 3k. but now that i'm going full synthetic, i'm gonna do it at every 5k.

Saki GT

You should really read the owner's manual. 7,500 for normal service is recommended, so by changing your oil at less than 50% recommended, you might be doing more harm than good, as oil has a lifecycle of its own and needs to be worn out properly and not replaced before its detergents do their job.

silencertk

worn out before the detergents do their job? Thats interesting. I'm almost positive that most members on this board change their oil at 3K intervals... never heard of any complaints.
May i ask what you base your statement on?

vtec9

the oil filter is fine. It can probably filter adequately for up to 20k miles. Amsoil claims their filters are good for 25k miles.

Saki GT

Sorry, I didn't mean detergents but the other stuff in oil, waxes and such, that will build up over time if they don't have time to burn off.

I recommend you read the Oil Journals in the FAQ and Road Rage's posts in particular - its a good read on what oils seem better, how long they really last, and why there's no need to change oil so much.

Steven2k

i dont see how it can harm anything.

do you have a link to this article you speak of?

s2krey

i use mobile 1 full syn and filter and cahnge it about 4-5500k miles. most miles are freeway so no harsh stop and go.

Saki GT

Mechanically, its not doing a lot of harm unless you look at these additive buildups and how they can contribute to engine wear. Environmentally and fiscally, you're using more oil than you need to and are spending more money than you need to. Road Rage has posted to this end many times and I'd point you to his posts.

If you go to the Oil Journals thread at the top of this forum section - its a sticky - you'll see a hugs list of linked threads with discussions on all the oils in the S. Go to the engine oil section and, frankly, just start reading, paying attention to RR's posts. They are very informative, and one way or another, at least you'll be making an informed decision about when and why to change your oil.

There's a ton of great info there from everything to what brands are better, what you can get away with, etc.

Steven2k

FF2Skip

That's because they're still brainwashed from years gone by. As has been stated, Road Rage and others have taken the time to chronicle much useful information.