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FAQs for Synthetic Oils
Why Synthetics?
How should I dispose of used synthetic motor oil?
Are there advantages to using synthetic oil in a motorcycle?
What makes synthetic oil superior to conventional oil?
Can different synthetic motor oils be mixed together?
Why Synthetics?
All motor oils are made up of base oils and additives. In general, fully synthetic motor oils contain non-conventional, high-performance fluids and a system of additives to help prevent wear, keep an engine clean, flow easily, maintain viscosity, prevent rust and reduce friction. The result is a lubricant that remains liquid and slippery under the widest possible range of temperatures and engine conditions.
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How should I dispose of used synthetic motor oil?
You should follow the same environmentally sound procedures that you do with conventional motor oil. The U.S. Environmental Protection Agency's (EPA) guidelines for disposal include:
  • Do not dump used motor oil in the trash, on the ground or down the sewer or storm drain.
  • Place the used oil in a securely closed container.
  • Take the used oil to a service station or a collection location that recycles used motor oil.
  • Do not burn used motor oil in a space heater.
  • Do not mix motor oil with other substances such as gasoline or antifreeze.
In short, Mobil 1 and Mobil 1 Extended Performance should be disposed of in the same manner as used conventional oil. Please note that it is acceptable to mix used Mobil 1 and Mobil 1 Extended Performance with used conventional oil.

Click here to locate proper disposal locations in your area.
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Are there advantages to using synthetic oil in a motorcycle?
ExxonMobil offers three synthetic motor oils for motorcycles.  Mobil 1 motorcycle oils have been specifically optimized for motorcycle applications, including transmission clutch performance and high-temperature operation such as air-cooled operation. Be sure to follow your owner's manual for recommended oil and filter change frequencies.
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What makes synthetic oil superior to conventional oil?
Historically, conventional oils lack the performance of synthetic oils in the areas of low-temperature performance and high-temperature oxidation stability. Conventional motor oil is made up of an inconsistent mixture of long and short chains of carbon and hydrogen atoms. In the extreme heat of an engine, short-chain molecules can evaporate, and unstable molecules can oxidize and break down. Conventional oils also contain much greater amounts of impurities, such as sulfur, reactive and unstable hydrocarbons, and other undesirable contaminants that cannot be completely removed by conventional refining of crude oil.

Mobil 1 uses high-performance fluids, including polyalphaolefins (PAOs), along with a proprietary system of additives. Each Mobil 1 and Mobil 1 Extended Performance viscosity grade use a unique combination of synthetic fluids and selected additives in order to tailor the viscosity grade to its specific application.
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Can different synthetic motor oils be mixed together?
Mobil 1 is fully compatible with conventional motor oils, semi-synthetic motor oils and other synthetic motor oils, should it be necessary to mix them. However, it is important to note that the superior performance of Mobil 1 will be reduced by diluting it in any way.
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