Full synthetic motor oils are engineered from carefully selected base oils and enhanced with precisely formulated additive packages. These oils are created through a chemical process, resulting in a more consistent and stable molecular structure, that translates to exceptional performance across a wider range of operating temperatures and conditions. “Full synthetic motor oils offer several advantages over conventional and synthetic blend oils in passenger cars,” comments Ali Korri – General Manager at A&K Autoteile GmbH.
“The requirements for motor oils in passenger cars have increased significantly over the last twenty years. Synthetic-based motor oils were only produced for passenger cars with very high requirements,” highlights Oliver Kuhn, Deputy Head of the Oil Laboratory at LIQUI MOLY.
In hot climates, full synthetics maintain their viscosity and lubricating properties much better than conventional oils, preventing excessive engine wear and maintaining optimal fuel efficiency. In cold weather, they flow more readily, ensuring quicker lubrication at start-up, crucial for reducing wear during the engine’s most vulnerable moments. “Unlike conventional oils, synthetic oils resist thickening in cold weather, enabling easier starts and faster lubrication,” adds Korri.
This reduced friction contributes to easier starting, particularly beneficial in sub-zero temperatures. Full synthetics also excel under high-stress conditions like heavy towing, aggressive driving or prolonged idling. Commenting on this advantage, Korri adds, “They also withstand high temperatures better, reducing the risk of oil breakdown and sludge formation.”
This high temperature handling property ensures consistent lubrication, minimizing the risk of engine damage. This is particularly crucial for modern, high-performance engines that generate significant heat. “Traditional motor oils based on mineral oils are no longer able to cope with this increase in performance, resulting in premature ageing and sludge formation,” emphasized Kuhn.
Clearly, choosing full synthetic motor oils for your passenger car is a decision that offers numerous benefits, which includes:
Extended Drain Intervals
One of the most significant advantages of full synthetic motor oils is their extended drain interval. The superior stability and resistance to degradation allow the oil to maintain its protective properties for a longer period, significantly reducing the frequency of oil changes, translating to both convenience and cost savings. “In the past, motor oils were relatively similar in structure, mostly with simple mineral base oils and classic additives, which were designed for normal requirements and moderate oil change intervals,” comments Kuhn.
Additionally, according to Korri, “Full synthetic oils last longer than conventional oils, often allowing for extended oil change intervals. For instance, 10,000–15,000 km for full synthetic oils vs. 3,000–5,000 km for conventional oils.”
However, extended drain intervals should never exceed manufacturer recommendations for your car model and oil type.
Enhanced Engine Protection
Engine protection is of supreme importance and full synthetic motor oils deliver superior protection against wear and tear. Their consistent viscosity and robust film strength minimize friction between moving parts, reducing wear and extending engine life. This is particularly crucial for modern engines with tighter tolerances and more complex components.
“Full synthetic oils provide better lubrication, reducing wear and tear on engine components. They maintain a stable viscosity across a wide temperature range, ensuring optimal protection in extreme conditions,” asserts Korri.
Improved Fuel Economy
The reduced friction offered by full synthetic motor oils directly contributes to improved fuel economy. Your engine can operate more efficiently by minimizing energy loss due to friction, consuming less fuel to achieve the same power output.
Enhancing on the fuel economy advantage, Korri affirms that, “Their lower friction properties reduce engine drag, which can enhance fuel economy.”
This advantage translates to tangible savings at the pump, especially over the long term, making the slightly higher initial cost of full synthetic oil a worthwhile investment.
Cleaner Engine
Regular use of full synthetic motor oil keeps your engine remarkably clean. As Korri says, “Synthetic oils contain fewer impurities and better detergents, helping prevent deposits from forming in the engine.” These superior detergent properties effectively remove and suspend contaminants buildup. A clean engine is a healthy engine. This contributes to a smoother, more responsive engine and a reduction in potential maintenance issues.
Protection Against Oxidation and Degradation
Oxidation is a significant factor in the degradation of motor oil. Full synthetics exhibit superior resistance to oxidation, meaning they maintain their lubricating properties for longer periods even under high-temperature and high-stress conditions. This extended lifespan reduces the likelihood of oil breakdown and the formation of harmful deposits, contributing to better engine protection and a longer engine lifespan.
“Many new vehicles, especially turbocharged and high-performance engines, require synthetic oils to handle higher operating pressures and temperatures,” said Korri.
Reduced Oil Consumption
Full synthetics resist evaporation more effectively, minimizing the loss of oil through the engine’s crankcase ventilation system. As Korri says, “Synthetic oils have lower volatility, which means they evaporate less and require fewer oil top-ups over time.” This also translates to a more stable oil level.
Enhanced Seal Protection
Over time, engine seals can dry out and crack, leading to leaks and potential engine damage. Full synthetic oils often contain additives specifically designed to help maintain the elasticity and integrity of engine seals, reducing the likelihood of leaks and extending the life of these crucial components.
Enhanced Engine Power and Responsiveness
Full synthetic oils allow your engine to operate more freely, improving engine power, acceleration and overall responsiveness. You might experience a smoother and more powerful driving experience, particularly under demanding driving conditions.
“In particular, the downsizing of engines and the simultaneous increase in power posed completely new challenges,” says Kuhn. “Temperatures and pressures in the engine became significantly higher, oil change intervals much longer and at the same time the oil volume decreased due to the smaller engines,” he adds.
Make the right choice for your vehicle
Full synthetic motor oil is an investment in the health and longevity of your engine, ensuring optimal performance and reliability for years. “By switching to synthetic base oils in combination with modern additive packages, the highest requirements of current vehicles can now be optimally met,” recommends Kuhn. “Today, the synthetic base oils only act as a lubricant to a limited extent but are primarily the carrier medium for the additives. These protect the engine from wear and contamination over the entire interval and at the same time guarantee a long service life,” Concludes Kuhn.
Additionally, following your vehicle’s recommendations for oil type and change intervals is always recommended to keep your car in optimal condition. However, if your vehicle is compatible with full synthetic motor oils, utilizing them can certainly help provide the best protection and performance you can get in an engine lubricant.
