2013 Mazda 5
Driving on Freeway in Califor around 3:30pm - drove 30-40 mins around 70mph without AC/Heater.
All of a sudden traffic slowed it down to 5-20mph. I noticed the fan air being blown was hotter - so when the window was down I noticed outside is cooler! Why was this? I also noticed some oil burning smell briefly - this would have been from the last power steering fluid flush spill - right after the change, I noticed oil on the splash cover too.
I happened to have my OBDII device connected for the first time. Smartphone app showed boiling temp. I drove back around 10:30pm - no issues.
I had driven 5-7hrs on freeways and have never noticed anything like this - but those drives would have had the AC turned on.
Does a hot engine can cause the fan air being blown to be hot for the passengers?
Is this a normal?
In my 20 or so years of driving, this is the first time I experienced. Does this have anything to do with the speed around 10mph - I guess more cooling when the car runs faster?