We made a mistake and we accept it! Thanks Steve, one of new member for pointing out our mistake. We corrected ourselves and the new information is now updated.

We had recommended an oil change every 3,000 miles under our Recommended service tab http://www.prundo.com/recommended.php and we were wrong

Steve directed us to two sites which provide the insight on whether an oil change is required every 3,000 miles or is it just a myth.

http://www.3000milemyth.org/

http://www.moneybluebook.com/the-3000-mile-oil-change-myth-save-your-money/

According to the consumer reports, most of the modern cars can go for over 7,500 or even 10,000 miles between oil changes, when driven under normal conditions. They recommend to always checking your user manual to find out the best oil change interval for your car.

Some models now come with a monitoring system that alerts the driver when the oil needs changing. Depending on driving conditions, these can extend change intervals to 10,000 or 15,000 miles.
–    Consumer Reports, December 2006

“…for the vast majority, 5,000-mile oil changes will help your engine last to a ripe, old age.”
–Tom and Ray Magliozzi, hosts of NPR’s Car Talk, on MSNBC, April 17, 2006

Conventional wisdom has held that the oil should be changed every 3,000 miles. This notion has been ingrained into people’s heads for decades, in part as a marketing ploy by oil companies. The 3,000 miles interval made sense when the engines used single grade no detergent oils. But with the latest oils and car designs, it is no longer necessary to change oil that often under normal conditions.
-    Steve Ritter, in Chemical and Engineering News, March 13, 2006

Ford Motor company generally recommends getting an oil change every 5,000 miles or every six months, whichever comes first
- www.ford.com

As per 300milemyth website, Advances in motor vehicles and oil make it possible to go much longer between oil changes without harming a car’s engine. However, motorists should follow car maker recommendations for oil change frequency based on driving conditions.

According to moneybluebook.com, the only experts that push for this are those from the oil industry. While it’s not exactly a scam per-se, it’s quite a lucrative myth for the engine oil maintenance industry. The average American drives 12,000 miles in a year, and with an oil change every 3,000 miles costing in excess of $25 each, that’s $100 annually for each customer. Every visit to the auto mechanic or oil change facility gives them yet another opportunity to push for other pricey maintenance services such as air filter replacement and transmission flush.

Moneybluebook website has an article from consumer report on the trial they conducted with New York Taxi Cab Consumer Reports to test engine oil performance in 1996. After examining the results, they concluded that:

Even in the severe driving conditions that a New York City taxi endures, we noted no benefit from changing the oil every 3,000 miles rather than every 6,000. If your driving falls into the “normal” service category, changing the oil every 7,500 miles (or at the automaker’s suggested intervals) should certainly provide adequate protection. (We recommend changing the oil filter with each oil change.)

Many owner’s manual also notes that if you only occasionally drive under the above severe condition, than you should follow the normal driving conditions maintenance schedule.

Bottom line: Check your owners’ manual before you take your car for an oil change!