Join Date: Oct 2015
Location: Wisconsin, Madison
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 56 Post(s)
1) There is no drawback to the flexible routine. It is just a calculated estimate of the oil life based on your driving and so on. The dealers are not "required" to put it up (at least not at my dealership as we either set it to fixed or not at all, leaving it up to the customer) As long as you use 0w20 you'll be fine using flexible (it calculates using ow20 specs).
2) You can set it back to Fixed or Off by going to your app icon and enter maintenance tab and set it that way. First option gives you month and mileage when set to fixed. Last two are just oil change set to mileage as well as tire rotation set to mileage. If for any reason you reset any of the maintenance and mileage says some astronomical number, ignore it and reset it again.
3) Correct, our vehicles require 0w20 regardless of fixed or flexible at 4.5 qts.
As mentioned before feel free to follow your own schedule for oil changes. Typical is 4 months or 5000 miles for harsh driving conditions which here in WI is set as according to some entity. Rule of thumb that I was taught 20 years ago is just check the oil yourself with the dipstick. If it looks new you are fine. If its nasty and sooty then change it. These maintenance reminders are just there because people nowadays dont bother to open their hoods/bonnet or even know how (I literally had to show numerous customers how to open their damn hood/bonnet). But for the love of all this expensive do not cheapen out on oil by substituting for cheap non-synthetic oil. In a different post i mentioned that our cars are expensive, like 20k+ cars. A $60-$80 oil change 3 times a year is nothing compared to a $5k+ new engine.
Certified Mazda Technician