Changed out the engine air filter last week 10800 miles. I was contemplating changing oil here in but the milage minder says 3200 miles to go so it should make it fine until September or October.
I just did the cabin air filter last week because the better half has Asthma and I try to keep the air as clean as I can for her. 10800 miles the second change.
If they are getting close to 6 years old I'd change now. Likely some good sales coming up around Memorial Day. Those hot desert roads can be the death of a tire.
My two year old Mazda is running 92 Octane nonethanol it doing just fine. I'll be doing another UOA in a few weeks here the first on showed a very minute amount of fuel dilution.