[naz]

cornflakes,Sep 28 2007, 12:44 AM Wrote:you'd change synthetic oil every 3500 kms????

isn't synthetic supposed to be good for at least 10,000kms or more between changes?

I change every 5000k using regular motor oil (as recommended in our factory handbook).
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keep in mind that there is a 'regular' service interval and a 'severe' service interval (shorter) and most of us do stop and go driving, which falls under the 'serve' interval

personally, i would only extend an oil change (whether synth or conventional) after an oil analysis that showed the oil was suitable (physical properties ok, enough additives left) for an extended interval

using the factory fill oil and changing it using the severe service interval and you are good to go.. no more thought required dude!