Introduction

A second-hand auto purchase can often be an intelligent choice for Indian customers as it provides significant savings, higher value for your money, and the chance to obtain a top-tier model at a fraction of what you would pay if you were to buy it new. After the purchase, though, maintaining your used automobile will become increasingly critical - more specifically, ensuring regular engine oil changes.

The engine oil is not only the lifeblood of your engine, but it also helps lubricate moving parts, reduce friction, keep your engine cool, and help protect against dust, dirt and sludge wreaking havoc on your engine. This protective property makes engine oil changes even more essential for used autos, as many of the engine components on those cars already exhibit a level of wear and tear.

Because of this heightened necessity for regular oil changes, many used auto owners have the same question:

How frequently should I perform engine oil changes on my used vehicle? Additionally, what type of engine oil is considered the best for used cars in India?

Throughout this guide, we will detail an ideal engine oil change schedule, how to pick an engine oil suited for used vehicles, warning signs to help you recognize potential problems, and maintenance tips that will help you keep your vehicle maintenance current. 

Why Engine Oil is Important in Used Cars

A brand new car engine is installed with brand new components whose factory settings are not hindering any kind of problems. A used vehicle can accumulate thousands of kilometers prior to purchasing meaning:

There are already signs of wear on various components

The oil in the engine can deteriorate quicker than expected

There can be significant amounts of dirt and carbon buildup

The engine may generate additional heat than it is used to

Fresh motor oil can assist with:

✅ Reducing friction between all engine components

✅ Improving fuel consumption/mileage/efficiency

✅ Maintaining a cooler engine temperature

✅ Protecting against component wear

✅ Extending the life of the vehicle

✅ Making driving better.

If you do not have your oil changed on a regular basis you could be putting your motor at risk of performing poorly or having the motor run hot, resulting in costly repairs.

For the driving conditions in India, traffic, high temperatures, dust, and stop-and-go city driving, maintaining a proper schedule for oil changes on a used vehicle is extremely important. 

How Often Should You Change Oil in a Used Car? 

When it comes to changing the oil in a used vehicle, There isn’t one specific answer that will apply to any automobile. which has to be based on:

- The age of the automobile

- The distance travelled (in km)

- Whether or not it has a petrol or diesel engine

- The quality of the driving conditions

- The type of oil which is used 

An easy to read guide (for use in India) for oil change frequency is: 

1) Mineral Oil - 

Your best option will be:

o Older entry-level or budget classified vehicles

o Vehicles that are driven less frequently

Frequency of Change:

 5,000 km or every six months

Examples of Vehicles: 

- Maruti Suzuki Alto 

- Hyundai Santro 

- Tata Indica

2) Semi Synthetic Oil

 - Your best option will be: 

o Most petrol vehicles (that are used) 

o Vehicles driven around town each day

Frequency of Change: 

7,000-8,000 km or every six to eight months 

Vehicles: 

- Maruti Suzuki Swift 

-Hyundai  i20

- Honda City

3) FullySynthetic Oil -

 Your best option will be: 

o Luxury cars

o Turbo engines

o Vehicles driven on the highway

o SUVs with diesel engines 

Frequency of Change: 

10,000-12,000 km or annually 

Vehicles: 

- Mahindra Scorpio 

- Hyundai Creta 

- Toyota Innova Crystra

What Engine Oil Should You Use In India?

When it comes to selecting engine oil in India, there are some key points that you need to keep in mind:

1. Viscosity Grade

For example:

• 5W-30
• 10W-30
• 15W-40

What does it mean?

• First number helps with cold start performance
•  second number provides heat protection.

Recommended for Indian Weather:

For Petrol Cars:

• 5W-30
• 10W-30
• 
  

For Diesel Cars:

• 5W-40
• 15W-40

For Older High KM Cars:

• 10W-40
• 15W-40

The above mentioned viscosity grade helps reduce leaking and aids in protecting your worn Engine.

Most Popular Engine Oils Brands In India

The Following Are Reputable Companies:

• Castrol
• Mobil
• Shell
• Gulf Oil
• Servo

Always purchase the original product from a retailer you can trust.

Signs Your Used Car is Due for an Oil Change:

Do Not Wait Until You Have Ruined Your Car By Driving It Too Far On The Same Oil!!!

Some Signs To Look For These Are:

Rough Engine

Loud Car Vibration Due To Your Car Running Rough

Oil Pressure Light Illuminated

Do Not Ignore Any Warning Lights On Your Dashbaord

Black Oil With Sludge Signs

Good Fresh Oil Will Be Gold/Brown In Colour, While Bad Oil Will Be Black/Sludge

Reduced Km Per Litre

The Fuel Mileage of the Car Has Dropped

Bad Smell

 The Oil Has Overheated

Engine Is Overheating

The Older Oil Is Not Cooling As Efficient As A New Oil Would

Excessive Smoke

Normally Found In A Diesel Vehicle.

Oil Filter: Do Not Forget to Change

Remember when changing your oil, you need to also change the oil filter.

Why is it important?

Old filters collect:

• Dust
• Metal Shavings
• Carbon Build-Up

The dirtier the oil filter, the quicker the clean motor oil will become dirty.

Make sure you change:

Oil and the oil filter at the same time.

Best Oil Change Tips for Pre-Owned Vehicles in India

Check Engine Oil Level Every Month

Use dipstick.

Change Sooner if the Vehicle is Under Severe Service Conditions

City Driving Creates More Wear and Tear on Engine.

Maintain Service Records

You can use them to sell the vehicle.

Use a Motor Oil Recommended by the Manufacturer

Don't use random engine oils.

Don't Mix Motor Oils

Mixing Different Motor Oils Can Decrease Your Engine Oil Protection.

Purchase Quality Motor Oil

Using Fake Motor Oil is Dangerous.

Approximate Engine Oil Change Cost in India

Typical Prices:

Hatchback 

₹1,500 - ₹2,500

Sedan 

₹2,000 - ₹3,500

SUV/Diesel/4x4

 ₹3,000 - ₹6,000

Final Thoughts 

A used automobile should last many years if basic maintenance is performed; this includes periodic (typically every 5,000 km or so) oil changes to preserve the reliability of the vehicle .

Summary:

• Mineral Oil — 5,000 km

• Semi-synthetic (Blended) Oil — 7,000 to 8,000 km

• Synthetic Oil — 10,000 to 12,000 km

• Change oil filter upon every oil change

• Check oil level once a month

• Ensure proper viscosity (thickness) of oil

If you make regular oil changes on your vehicle, you can expect better fuel economy, less wear and tear on your engine, and lower repair costs.

If you take care of your used automobile, it will be reliable for many years to come!