It’s a check that remains relatively simple despite other areas of the car getting super complicated and digital. And believe it or not, changing the oil is a task that — if you’re so inclined — you ...

Windshield washer fluid is the easiest to change and has the easiest reservoir to find. Once you pop the hood open, you can’t miss the blue cap. To fill it, pour new washer fluid into the reservoir ...

Learn how to check and maintain the six essential fluids that keep your car running smoothly, from engine oil to windshield washer fluid.

Instead, you have to go to the engine bay and find the oil level dipstick in your car to check how much engine you have left.

The Bottom Line If your car is newer and uses synthetic oil, you likely don't need to stick to the outdated 3,000-mile rule. Instead, check your owner's manual and follow your oil-life monitor.