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Motor Oil 101

  • Hovig M
  • Jul 3, 2025
  • 2 min read

Updated: Aug 4, 2025

There are four main types of motor oil: conventional, synthetic, synthetic blend, and high mileage. Oil change intervals vary based on the oil type and driving conditions, but generally range from 3,000 to 20,000 miles.


Mechanic changing car engine oil filter

Understanding Motor Oil Types


Choosing the right motor oil is crucial for your vehicle's performance. Each type of oil has unique characteristics that cater to different needs. Below, we break down the four main types of motor oil.



  • Made from crude oil that is refined and processed.

  • Good for standard, low-mileage vehicles with simple engine designs.

  • Recommended change intervals: 3,000-5,000 miles or every three months.

  • Breaks down faster than synthetic oils, especially under heavy use.



  • Chemically engineered to provide superior protection and performance.

  • Offers better lubrication, reduced engine wear, and longer oil change intervals.

  • Ideal for high-performance vehicles, luxury cars, and those driven in extreme conditions.

  • Recommended change intervals: 7,500-10,000 miles, potentially up to 20,000 miles, depending on the vehicle and conditions.

  • Handles extreme temperatures better than conventional oil.



  • A mix of conventional and synthetic oils.

  • Provides a balance of performance and cost.

  • Offers improved durability compared to conventional oil.

  • Recommended change intervals: 5,000-7,500 miles.



  • Designed for vehicles with over 75,000 miles.

  • Contains additives to help reduce oil consumption, leaks, and emissions in older engines.

  • Change intervals depend on whether it's a synthetic or conventional blend.


Mechanic inspecting car engine

Factors Affecting Oil Change Intervals


Several factors can influence how often you should change your oil:


  • Driving Conditions: Short trips, stop-and-go traffic, towing, and extreme temperatures can shorten the lifespan of any oil, requiring more frequent changes.

  • Driving Habits: Aggressive driving can also accelerate oil breakdown.

  • Vehicle Manufacturer Recommendations: Always consult your vehicle's owner's manual for specific recommendations.


Key Takeaways


  • Synthetic oils generally offer the longest intervals and best protection.

  • Conventional oils are suitable for many standard vehicles but require more frequent changes.

  • Synthetic blends offer a good balance between performance and cost.

  • High mileage oils are designed for older vehicles with more wear.


Important Considerations for Oil Changes


  • Check Your Owner's Manual: Always consult your vehicle's owner's manual for specific oil recommendations, including the correct viscosity (e.g., 5W-30) and oil type.

  • Driving Conditions: Factors like frequent short trips, stop-and-go traffic, towing, or driving in extreme temperatures can affect oil life and may require more frequent changes.

  • Follow Manufacturer Recommendations: Using the oil type and change intervals recommended by the manufacturer ensures optimal performance and can help maintain warranty coverage.


By understanding the different types of motor oil and considering your vehicle's needs and driving habits, you can choose the right oil. This will ensure your engine stays properly lubricated and protected for years to come. We at Funk Bros. Auto only use premium oil such as Mobil oil and manufacturer oil specifications.


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