For those of you who are changing the oil yourself, you should take a look at the oil and see what condition it is at the time you change it and adjust your schedules appropriately.

Syn. Oils do last much longer and the oil condition monitoring system is designed to first and foremost protect your car.

Old school or not and the care of your car considered, the environment needs your attention too and unnecessarily oil changes contribute a large amount to waste and pollution.

Here's a link to an interesting article:

http://www.amsoil.com/lit/lng_article/march_lng_new.pdf

Though Amsoil, who is a motor oil manufacture obviously has some to gain from the results of this article, the article does appear in a publication of the lubrication industry.