Doing a coolant flush for the first time
Scotty, i am a very long time follower of your's. My wife and i own a 2017 Mitsubishi mirage g4 ES, the base model it has 115,000 miles on it, It is 5,000 miles away from needed fresh coolant. Would it hurt the car if i took the old coolant out now and put fresh in?
And use the specific OEM or OEM-spec coolant for your vehicle. Don't "mix and match" coolant types and don't allow anyone to tell you otherwise.
I'd also suggest a special (not expensive) spill proof funnel, for burping the system. It has multiple attachments for different types of radiator caps, if you're DIYing it.
No it won't hurt it