Forget that "every 3,000 miles" rule.

A survey by AAA found that 95 percent of drivers had oil changes too frequently. Only heavily used cars, such as taxis, need one after 3,000 miles. Normal usage typically requires an oil change every 7,500 miles, says Perry Stern, editor at MSN Autos.

http://www.cnn.com/2009/LIVING/personal/07/24/rs.how.to.save.shopping/index.html

Most manufacturers recommend 5,000 miles for regular use vehicles and 3,000 miles for special use.
The catch is that the "special use" definition is open to interpretation.
Most dealers (if you ask them) will flag your car as special use based on many different reasons, such as living in a rural area or a major city with heavy traffic or if you commute far to work every day.
They obviously have a vested interest in this.

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"Mah deah, there is much more money to be made in the destruction of civilization than in building it up."

-- Rhett Butler in "Gone with the Wind"

It was recently reported in the American Chemical Society magazine Based on pure scientific study with measurement of Viscosity drop over a long spectrum of use that the basic lubricant lasts a long time and the gimmick of the lubricant manufacturer is to make you change it as frequently as possible to make money.

I've been changing my oil from Walmart for $56 once in 6 months with ALL SYNTHETIC package.

I put around 3000 to 3500KM per month and I find that my 3.1Ltr engine gives me 11Km per liter(Petrocanada)in summer and in winter around 9.5Km with all the heaters running.


Honestly you need 2 or maximum 3 changes per year.

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Sunny Leone a true Canadian DESI now back in India !.