Synthetic Oil Better Than Conventional

AAA Auto Repair Article
By AAA Automotive
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Making an informed choice about oil changes just got easier, thanks to new research on the quality of engine oil. AAA found that synthetic oil outperformed conventional oil by an average of nearly 50 percent in its independent evaluation, offering vehicles significantly better engine protection for only $5 more per month when following a factory-recommended oil change schedule. To protect vehicle engines, particularly those that operate in extreme conditions, AAA urges drivers to consider a switch to synthetic oil at their next oil change service.
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"Oil protects critical engine components from damage and AAA found that synthetic engine oils performed an average of 47 percent better than conventional oils in a variety of industry-standard tests," said John Nielsen, AAA's managing director of Automotive Engineering and Repair. "With its superior resistance to deterioration, AAA's findings indicate that synthetic oil is particularly beneficial to newer vehicles with turbo-charged engines and for vehicles that frequently drive in stop-and-go traffic, tow heavy loads or operate in extreme hot or cold conditions."

While only a limited number of vehicles specifically require synthetic oil, all vehicles can benefit from using synthetic oil. At an oil change service, many drivers are offered a choice between conventional or synthetic oil. However, in a companion AAA nationwide survey of U.S. drivers, 44 percent are either unsure (27 percent) or do not believe (17 percent) that the more expensive synthetic oil is better for a vehicle's engine. Reasons cited for regularly choosing the cheaper, conventional oil include feeling that synthetic oil is too expensive, offers no benefit, that the upgrade to synthetic oil is an unnecessary up-sell by a repair facility, or they are simply not offered the choice.

Synthetic Oil Cost

Switching from a conventional oil to a synthetic oil will cost the average driver $64 more per year, or an extra $5.33 per month. A survey of AAA's Approved Auto Repair facilities reveals that the average cost of a conventional oil change is $38, while a synthetic oil change is $70. For those that change their vehicle's oil themselves, the average cost of 5 quarts of conventional oil is approximately $28, while synthetic oil is $45. AAA's survey also shows that vast majority (83 percent) of auto mechanics select synthetic oil for their personal vehicles. "It's understandable that drivers may be skeptical of any service that is nearly twice the cost of the alternative," continued Nielsen. "While a manufacturer-approved conventional oil will not harm a vehicle's engine, the extra $30 per oil change could actually save money in the long run by protecting critical engine components over time."

"It's understandable that drivers may be skeptical of any service that is nearly twice the cost of the alternative," continued Nielsen. "While a manufacturer-approved conventional oil will not harm a vehicle's engine, the extra $30 per oil change could actually save money in the long run by protecting critical engine components over time."

Finding Quality Auto Repair

The hesitation to select a synthetic oil may stem from American distrust in car repair shops. Another recent AAA survey found that two-thirds of U.S. drivers do not trust repair shops, with most citing concern over the recommendation of unnecessary services.

AAA recommends that you plan ahead for vehicle service by finding an auto repair shop and technician you can trust before you need them. AAA.com/AutoRepair. provides information on nearly 7,000 Approved Auto Repair facilities that have met AAA’s high standards for appearance, technician training and certification, insurance coverage and customer satisfaction. AAA regularly inspects every Approved Auto Repair facility and surveys their customers to ensure ongoing performance. In addition, AAA members receive special benefits that include auto repair discounts, an extended 24-month/24,000-mile parts and labor warranty, and AAA assistance in resolving repair-related issues.

Methodology

AAA's engine oil research focused on eight industry-standard ASTM (American Society for Testing and Materials) tests to evaluate the quality of both synthetic and conventional engine oils in terms of shear stability, deposit formation, volatility, cold-temperature pumpability, oxidation resistance and oxidation-induced rheological changes. At the time of testing, all tested oils were licensed by the American Petroleum Institute and advertised to meet the International Lubricants Standardization and Approval Committee's GF-5 specifications. When selecting an oil, it is critical to reference the vehicle's owner's manual to ensure that the oil meets the exact specifications for that particular engine.


Additional Resources

Synthetic vs. Conventional Oil Report

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