The following can be found on page 419 of the 2012MY Explorer Owner Guide 2nd Printing in the NORMAL SCHEDULED MAINTENANCE AND LOG section:
“Intelligent Oil Life Monitor™
Your vehicle is equipped with an Intelligent Oil Life Monitor™ that determines when the engine oil should be changed based on how your vehicle is used. By using several important factors in its calculations, the monitor helps reduce the cost of owning your vehicle and reduce environmental waste at the same time. This means you won’t have to remember to change the oil on a mileage-based schedule; the vehicle lets you know when an oil change is due by displaying ENGINE OIL CHANGE DUE or OIL CHANGE REQUIRED in the message center.
The following table is intended to provide examples of vehicle use and its impact on engine oil change intervals; it is provided as a guideline only. Actual engine oil change intervals will depend on several factors and will generally decrease with severity of use.
When to expect the OIL CHANGE REQUIRED message
7500-10000 miles (12000-16000 km.) with “Normal” use:
– Normal commuting with highway driving
– No, or moderate, load/towing
– Flat to moderately hilly roads
– No extended idling
....The question is: if Ford designed vehicles with the intelligent oil life monitor, why would anyone not trust the computer to telll you when it's time to change the oil?...
....AND THE REALLY BIG QUESTION IS should we abide by what the dealer says regarding the frequency of oil change at the threat of voiding warranty (in the guise of profit)... AND WHY WOULD ANY DEALER VOID YOUR WARRANTY IF YOU FOLLOWED WHAT THE MANUAL SAYS regarding when to do oil change!
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Of course the computer is not perfect and we can do the oil change earlier and as often as we want but it should not be because the dealer says so!