How often do I change oil in a 2012 Ford Edge

in the old days was 3000 miles quickly became 30,000 miles with synthetic and now 100,000 miles....are you guys mad? so if you use synthetic, would watch the level carefully every couple of months~

Check your owners manual and if all else fails... Between 3k to 5k is a good guess. I would never run anymore then 7k miles on any oil don't care if its synthetic or conventional just not good for an engine.

Robert...Use can get a pdf version of the Owner Manual directly from Ford via this link (free of course)...I strongly suggest you print this out, if you do NOT have the original Owner's Manual: http://www.fordservicecontent.com/Ford_Content/catalog/owner_guides/12edgog1e.pdf --------> Page 377 has the Normal Scheduled Maintenance Information for Oil Changes...it DOES state 7,500 -10,000 miles for 'Normal Driving" (I'm a bit skeptical on that...I use Full Synthetic Oil on my SUV and NEVER exceed 7,000 miles before I change the oil. Hope this helps! :)

Changing your oil every 3-5,000 miles is extremely wasteful and completely unnecessary. America is the only country in the world that does this. Even on non-synthetic oils you can typically run 10,000 or more miles with no problems. Synthetic oils can achieve 20,000 miles. If you keep an eye on your dipstick and listen to your car you'll know when it's time to change your oil. People who are "old school" and abide by the 3,000 mile adage are wasting money and natural resources to "protect their engine".

One thing that Bubbagump is neglecting to take into account is the conditions that the vehicle is in. For instance, I am in Arizona where the summers can be hotter than hell itself. I change my oil at the 5k intervals due to this. Also, driving style factors into this equation as well.

Was talking with an old timer machinist. Used to be that tolerances were looser, allowing for more irregular friction, which resulted in greater quantities of metal shavings to be liberated. They are what ruin an engine. With more accurate CNC mills and lathes, the tolerances are way tighter, allowing fewer particulates to be liberated into the oil.