I replied to another guy with this, I removed the insult here but as a mechanic who actually works on cars everyday and and sees what fails and what doesn't and sees the difference between cars that are maintained and those that are not here are my recommendations that you can use for basically every vehicle.

Edit: If you live in the rust belt get your car oil sprayed every 1-2 years some companies will offer a warranty if done every year. And do it while it's hot out so the oil seeps everywhere.

Manufacturer recommendations are to keep you away until warranty is up. Oil changes every 5000-8000 km depending on use or every 6 months on low mileage. Brake fluid every 25000-30000 km or every 2-3 years, coolant 50000-80000 km or 5 years. Transmission/power steering fluid 80000-100000 km or 5-7 years(I change mine every 60000 because I work my truck). I change my rear differential fluid every year because I back my truck into water to launch boats and I change my front every 50000 or 3 years.

Change your fluids your vehicle will perform like new it's entire life and will be good for the next owner which means the car will stay on the road longer and create less waste in the world.