Very few Automotive subjects generate such strong opinion as that of how often oil changes should be made.
Instead of taking a stand, I am throwing out some of the points that often get into the discussions, and some of the factors that are involved.
(all subject to correction)
First... beginning with the 2014 manufacturer's model year, many oil change recommendations have been extended to 10,000 mile intervals. Some of the BMW models recommend 15,000 miles.
My aging next door widowed neighbor owns a 2011 Lincoln. Because she rarely drives more than a mile to the stores here in town, there are only 2500 miles on the car. The dealer has convinced her that the recommended oil change interval is 90 days or 3000 miles, whichever comes fiirst, so for the past 3 years she has dutifully brought the car in every 3 months for the oil change... @ $61, and along the way, a car wash @ $20 and twice a year, a full car inspection for $45....
That brings up the subject for another thread... "Preying on Seniors"... but despite this being the extreme, overpaying for services is not unusual.
Dealer recommendation? or Manufacturer recommendation?
Mileage? Months? Usage?... towing, stop and go, cold weather, dirt, dust, age of car.
Kind of oil:
Brand name, versus Walmart, versus recycled, versus synthetic.
Does type of oil affect oil change frequency?
Filter change necessary?
Do it yourself... Dealer.... Walmart.... Jiffy Lube etc...
Pay a disposal fee?
Is dipstick oil color an indicator?
Does the oil brand or price affect the qualities of the oil?
Dealer add-ons? Inspections
Sticker in the window... date or mileage for next change?
Rely on on board diagnostic center for oil change warning?
Know what the "W" stands for in 10W30?
Know SAE recommendation code? J, SN, S.... etc...
Some things to ponder:
... newer oils last longer because engine tolerances are tighter, metal surfaces stronger.
...the 3000 mile recommendation goes back to the 1940's... still used by most oil change facilities.
...the feared "engine failure" threat is ever hanging overhead... how many engine failures have you or anyone you know experienced in the last 20 years.
...in the 1950's as many as 5% to 10% of all cars on the road, had "smoking exhausts". when was the last time you saw one?
All leads to the questions:
how much do you know about oil changes and oil?
how often do you change oil?
how much do you pay for a change (including filter)?
do it yourself? dealer? fast oil change? brother in law?
change because you are keeping the car? ... like who would know?
how about the time it takes out of your busy day, to get it done...
are we creatures of habit?