Introduction
Your car’s engine is like the heart of your vehicle, and engine oil acts as the lifeblood that keeps it running smoothly. Without proper oil, the engine cannot reduce friction, prevent overheating, or clean itself from harmful deposits. Checking your engine oil regularly is one of the simplest yet most essential tasks for car maintenance. Surprisingly, many drivers overlook it until they run into serious trouble like engine knocking, poor performance, or even complete engine failure.
The good news is, checking engine oil doesn’t require you to be a mechanic. With a little guidance and a few minutes of your time, you can easily check oil levels and maintain your car’s health. This complete guide will walk you through everything — from why engine oil matters, how often you should check it, the tools you’ll need, to a step-by-step process of checking oil levels like a pro.
Why Engine Oil is Important
Before diving into the process, it’s important to understand why engine oil deserves so much attention:
Lubrication – Reduces friction between moving engine parts, preventing wear and tear.
Cooling – Helps carry away heat produced inside the engine.
Cleaning – Removes dirt, sludge, and small metal particles that could damage the engine.
Sealing – Creates a thin layer between piston rings and cylinder walls to improve efficiency.
Protecting Against Corrosion – Prevents rust and oxidation inside the engine.
Without proper oil levels, your engine risks damage that could cost thousands of dollars to repair.
How Often Should You Check Engine Oil?
How often you check oil depends on your driving habits, vehicle age, and manufacturer recommendations. However, a general rule is:
New cars (with oil monitoring systems): Once a month or when the dashboard warning light comes on.
Older cars: Every two weeks, since they may burn oil faster.
Before long trips: Always check oil to avoid breakdowns on the road.
Even if your car doesn’t show any problems, making it a habit to check oil once a month ensures peace of mind.
Tools You will Need
Checking engine oil is simple and requires very little equipment. Here’s what you’ll need:
Clean paper towel or rag
Gloves (optional, to keep hands clean)
Flashlight (if working in a dim area)
Owner’s manual (to locate dipstick and understand oil type)
Preparing to Check Engine Oil
Before you grab the dipstick, make sure conditions are right:
Park on a Level Surface – Slopes can give you inaccurate readings.
Turn Off the Engine – Wait at least 5–10 minutes after shutting off the engine to let the oil settle.
Pop the Hood – Use the hood release lever inside the car and secure the hood with its support rod.
Step-by-Step Guide: How to Check Engine Oil
Step 1: Locate the Dipstick
Most cars have a brightly colored handle (yellow, orange, or red) for the dipstick. It’s usually near the front or side of the engine. If you’re unsure, consult the owner’s manual.
Step 2: Pull Out the Dipstick
Carefully remove the dipstick and wipe it clean with a rag or paper towel. This first wipe clears oil that splashed while the engine was running, giving you a fresh surface for an accurate reading.
Step 3: Reinsert the Dipstick
Insert the dipstick fully back into the tube and pull it out again. Now you’ll see a clear indication of oil level.
Step 4: Read the Oil Level
At the end of the dipstick, you’ll find markings such as:
Low and Full
L and H (Low and High)
Min and Max
Two small dots or crosshatch area
If the oil mark is between the two indicators, the level is good. If it’s close to “Low” or below, you’ll need to add oil.
Step 5: Check Oil Condition
Besides level, also check the oil’s appearance:
Golden or amber color: Oil is in good condition.
Dark brown/black but smooth: Still usable, but may need a change soon.
Gritty or sludgy: Time for an oil change.
Milky or frothy appearance: Could mean coolant is mixing with oil — a serious issue that needs professional attention.
Step 6: Add Oil If Needed
If oil is low:
Remove the oil filler cap (usually marked “Engine Oil”).
Add the correct oil type (consult the manual).
Pour small amounts, checking level with the dipstick each time.
Never overfill, as too much oil can damage seals or cause pressure issues.
How to Check Engine Oil in Cars Without Dipsticks
Some modern cars no longer have dipsticks. Instead, they use electronic oil monitoring systems. To check:
Use the car’s infotainment system or dashboard menu to display oil levels.
Some vehicles require the engine to be warm and running for an accurate reading.
Follow instructions in the owner’s manual, as systems differ by brand.
Signs Your Engine Oil Needs Attention
Even if you check oil regularly, watch for warning signs:
Oil warning light on dashboard
Burning oil smell inside or outside the car
Excessive exhaust smoke
Engine noise or knocking
Oil spots under your car
If you notice any of these, check oil immediately.
Common Mistakes to Avoid When Checking Oil
Not waiting after shutting off the engine – Oil needs time to settle.
Checking on an incline – Always check on a flat surface.
Using the wrong oil type – Can harm your engine.
Overfilling oil – Just as dangerous as running low.
Ignoring oil condition – Don’t only focus on the level; check for dirtiness.
Tips for Maintaining Healthy Oil Levels
Stick to the manufacturer’s oil change schedule (usually every 5,000–7,500 miles).
Use high-quality oil and the correct grade for your vehicle.
Replace the oil filter during each oil change.
Check oil more often in extreme conditions (very hot, cold, or dusty environments).
Record oil checks in a notebook to monitor consumption patterns.
What to Do If Oil is Frequently Low
If you find yourself topping off oil too often, there may be an underlying issue:
Oil leaks – Look for puddles under the car.
Burning oil – Often caused by worn piston rings or valve seals.
Faulty gaskets – Can allow oil to seep into other parts of the engine.
In such cases, consult a mechanic for diagnosis and repair.
Final Thoughts
Checking engine oil is a small task with huge benefits. It ensures your engine runs smoothly, prevents costly breakdowns, and gives you confidence on the road. The whole process takes less than 10 minutes, requires almost no tools, and can save you thousands in repairs.
Make it a habit to check your oil once a month or before every long journey. Remember, your car’s engine depends on clean, sufficient oil — and keeping an eye on it is one of the best things you can do for your vehicle’s long-term health.
Also Read: