Wildfire ash effect on engine?

I'm inn San Diego, Called Mother In Law that lives in South Bay Area of L.A. just off PCH. She says her pool has a layer of ash covering her pool water.
That's 20 miles from the fires up north.

 

Our whole house is covered in ash down in long beach

 

Secondary Air Injector pump filter if you have one as well

 

Air filter. Cabin filter.

Change oil if it's time, but there's no way for the ash to contaminate the oil in normal service.