Oil change intervals vary widely by manufacturer and car model, ranging anywhere from 5,000 to 15,000 miles. The previous standard of an oil change every 3,000 miles is no longer applicable for most vehicles under normal driving conditions.
In recent years, a movement has urged auto owners to read their car's manual to find recommended oil change intervals. This would help avoid the unnecessary cost of unwarranted oil changes. Environmental concerns over the disposal of spent motor oil after unneeded changes is driving this movement. Advances in synthetic oils and automotive technology have been major factors in the need for less frequent oil changes.