Checking engine fluids regularly is crucial for maintaining the proper functioning and longevity of your vehicle. Here are five important engine fluids that should be checked regularly:

1. Engine Oil: Engine oil lubricates the moving parts of the engine, reduces friction, and helps dissipate heat. Check the oil level using the dipstick and ensure it's within the recommended range. Also, pay attention to the oil's color and consistency; if it's dark, gritty, or has a burnt smell, it may need to be changed.

2. Coolant/Antifreeze: Coolant regulates the engine's temperature and prevents it from overheating or freezing. Check the coolant level in the reservoir when the engine is cool, and ensure it's between the minimum and maximum marks. Additionally, inspect the coolant for signs of contamination or dilution, which may indicate a leak or other issues.

3. Transmission Fluid: Transmission fluid lubricates the transmission system, allowing smooth gear shifts and preventing wear and tear. Depending on your vehicle's design, you may need to check the transmission fluid level using a dipstick or through a fill plug. Ensure the fluid level is adequate and that it appears clean and translucent, not dark or burnt.

4. Brake Fluid: Brake fluid transfers force from the brake pedal to the brake components, facilitating braking action. Check the brake fluid level in the reservoir and ensure it's within the recommended range. Additionally, inspect the fluid for any signs of contamination or moisture, which can affect braking performance.

5. Power Steering Fluid: Power steering fluid helps in steering wheel operation by transmitting hydraulic pressure to assist with steering. Check the power steering fluid level in the reservoir and ensure it's within the specified range. Also, inspect the fluid for any signs of contamination or leakage, which can lead to steering issues.

Regularly checking and maintaining these engine fluids can help prevent mechanical problems, ensure optimal performance, and prolong the lifespan of your vehicle. If you notice any abnormalities or concerns with any of these fluids, it's essential to address them promptly to avoid potential damage to your vehicle's engine or systems.