Drain/fill/burp honda blue coolant anytime before 100k miles you feel like should be good.
Brake fluid im not sure about. I believe the cap says dot 3 only but people switch to dot 4 for track it looks like. When you bleed brakes you wanna get the bubbles and black crap out. I dont know about servicing pcv valve. Wheres heartland

 

Those heartland videos were gonna be my go to guide lol, he was really good about exact procedures.

I'm gonna do a drain and fill for the radiator, just don't know about fill level in the radiator itself. I'm sure I'll figure it out though.

I've seen a few people do a brake drains from the fill hole using a vacuum, but I'll just pump the brakes with a line disconnected. Is there any need to use the exact same brake fluid as Honda, as in does the two mixing cause problems?

 

The OEM PCV Valve for the 2.0 is part number 17130-5A2-A01.

The only person I've ever seen mention a PCV valve was cleanneon when he shared the maintenance minder list (https://www.civic11forum.com/thread...maintenance-schedule.6514/?post_id=64164&nested_view=1&sortby=oldest#post-64164), stating that you should change it every 30k, along with the brake fluid and CVT fluid. Seems to be located on the right side of the valve cover towards the back; doesn't look too difficult to change. And it isn't terribly expensive either.

 

the owner's manual says nothing about replacing the PCV valve at 30k. probably some list a dealership put out to sell you more unnecessary services.

 

Radiator should be full using a kit like this to have it more than full while the car is running to get the air out of the system, then you let the car cool down, plug the funnel and put the left over coolant back in your container. Make sure your reservoir is in the range on the jug when done

https://www.amazon.com/EPAuto-Radiator-Coolant-Filling-Funnel/dp/B01I40ZQWE/ref=mp_s_a_1_1_sspa?crid=35F2U6MOSUFMF&dib=eyJ2IjoiMSJ9.CbJxPpU-hxT9H0V6FUf_TBuf3jGXiJrhsEoqObjdHiFXvVIg0DlrYrVBJ1Mw-Jsfd6ii8wFuo_GDH79iOr7OJda4xQTkoPz1_McREztMsuFcDdinpS57xD4EXBSHiRtvXiTBoEDnXP1GnN3jiNlY--gOJFN8FSzgkp51NTp2eB6ooGwQjmcs7c4DtnUC-YuF87OBXDxP1yv_yuO_sftgOg._pGRy_TAj_lcTtj44ezqnCiyueyhzCKDBKXN3qMVdTA&dib_tag=se&keywords=radiator+burping+funnel+kit&qid=1724420033&sprefix=radiator+bur,aps,65&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfYXRm&psc=1

let the car run long enough to let the radiator fans kick on twice to cycle the coolant getting the bubbles out.

 

Use OEM coolant. for brake fluid, Motul makes some great stuff. just don't mix them. If you use a different brake fluid, flush the whole system. You won't need to replace the PCV valve unless it's broken.