Mobil 1 can safely be used for 10000miles.Our "trusted" mechanics like to recomend the same 3000mi. change like in the times when the engine oil was as good as the oil in the fry pan.
The oil companies don't say too much since this way they sell about 3 times more oil.It's a win/win situation.For them.
When I moved from Europe to N America I was surprised to see the conventional oil being changed at 3000.We used to change it at 5000.That was dino oil about 10 years ago.
Since then the oil have been greatly improved.Not to mention synthetic oil.
It's sad to see how people get fooled into changing their oil just because it "looks dirty".It's supposed to look dirty.If an oil does not look dirty means it's not doing its job,keeping dirt in suspension that is.
More on oil on
http://theoildrop.server101.com/cgi/ultimatebb.cgi
There was a test on NewYork cabs.Some got changes at 3000,the others at 9000. At 100.000 when they checked the engines for wear,there was no difference.This was on dino oil.
Many people at the site I mentioned do oil analysis so they can see exactly how a certain oil does in a given car.Mobil 1 at 8000mi. looks just fine.The filter is important also.
Hope I didn't bore you to much.Just sharing what I've learned in past months.Usualy I visit Prelude boards but now I wanted to see what the Accord guys say about the 2003 Accord.