What Oil Goes in My Car? Choosing the Right Oil for Your Car

Posted on April 17, 2024

A common question from motorists is “What oil goes in my car?

Choosing the correct engine oil can play a big role in influencing the performance, longevity, and overall health of your vehicle. In this guide, we’ll explain what car oil is, annd why it’s important so you can keep your car running smoothly and efficiently.

Understanding the Basics: What is Engine Oil?

Car Oil Top Up

Engine oil, or motor oil, is crucial for your vehicle’s engine; serving to lubricate moving parts, protect against corrosion, cool the engine, and clean internal surfaces. The right type of oil prevents premature wear, overheating, or failure.

The Importance of Oil Viscosity

Viscosity refers to the oil’s thickness and flowability at different temperatures, crucial for starting your car on frosty Irish mornings. Ratings like 5W-30 or 10W-40 indicate the oil’s performance in cold and operating temperatures, respectively.

Synthetic vs. Conventional Oil

Synthetic oils offer superior performance and protection, especially beneficial in Ireland’s varied climate. However, conventional oils may be preferred for older vehicles or those seeking an economical option.

Determining the Right Oil for Your Car

  • Consult Your Owner’s Manual: The primary source for the correct oil specifications.
  • Consider Driving Conditions: Harsh conditions may require synthetic oil.
  • Your Car’s Age: Older vehicles might benefit from high mileage oils.
  • Environmental Considerations: With Ireland’s changeable climate, oil that performs well across a wide range of temperatures is often more favourable. 
what oil do i put in my car

Changing Your Car Oil: A Routine Essential

Regular oil changes are crucial as oil breaks down over time, becoming less effective. 

For conventional oil, change every 5,000 to 7,500 miles, or every 10,000 to 15,000 miles for synthetic oil. This simple maintenance task is vital in Ireland, where driving conditions can quickly deteriorate oil quality.

Effects of Choosing the Right Oil

The right oil ensures efficient engine operation, reduces breakdown risks, and can improve fuel economy. For drivers, this means reliable and enjoyable journeys, whether commuting, exploring, or running errands.


For Irish motorists, understanding what oil goes in your car is fundamental to ensuring its performance and longevity. By considering viscosity, oil type, driving conditions, and vehicle age, you can make an informed decision that keeps your car running at its best. 

Regular oil changes protect your car’s engine and reduce the risk or performance issues and breakdowns. Trust in your vehicle’s manual, consider your driving needs, and seek professional advice if in doubt. 

For a fast, reliable car insurance quote, reach out to one of our trusted KennCo Insurance advisors on 0818 25 20 25, or click here for a secure online quote.

FAQs – What Oil Goes in My Car?

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