How long has AMSOIL been producing synthetic lubricants?

AMSOIL has been a pioneer in synthetic lubrication since 1972, launching the first synthetic motor oil to meet API standards. Over the decades, the brand has expanded to cover synthetic solutions for cars, trucks, powersports vehicles, and heavy-duty industrial equipment.

How do AMSOIL synthetic oils perform compared to other brands?

AMSOIL synthetic motor oils are engineered to deliver top-tier performance across the board—from extreme temperature stability to superior wear protection and fuel efficiency. Unlike many other oils that may shine in one area, AMSOIL is built to excel in all aspects of engine protection and reliability.

What’s the difference between synthetic and conventional motor oil?

Conventional oils are refined from crude oil, which contains natural impurities and inconsistent molecular structures. Synthetic oils, on the other hand, are scientifically formulated with uniform molecules that offer better stability, cleaner operation, and higher resistance to breakdown—especially in demanding conditions.

Can I use synthetic oil in a brand-new engine?

Absolutely. Synthetic oil is safe and often preferred for new engines. Some high-performance vehicles even come filled with synthetic oil straight from the factory.

Do new engines need to be broken in with conventional oil first?

No need. Many modern engines are designed to run optimally with synthetic oil right from day one. AMSOIL synthetic oils are completely suitable during the break-in period.

Will synthetic motor oil make my engine leak?

Not at all. AMSOIL synthetic oils are formulated to be compatible with engine seals and help maintain their elasticity, reducing the chance of leaks—especially in older engines.

Not at all. AMSOIL synthetic oils are formulated to be compatible with engine seals and help maintain their elasticity, reducing the chance of leaks—especially in older engines.

While AMSOIL is chemically compatible with other oils, mixing different brands can reduce performance and shorten the oil’s lifespan. For the best results and to maintain warranty coverage, it’s recommended to stick with AMSOIL products exclusively.

Why can AMSOIL synthetic oils last longer between oil changes?

AMSOIL uses high-quality synthetic base stocks and advanced additives that help the oil resist oxidation, thermal breakdown, and acid buildup. This results in cleaner engines and extended protection, even in tough conditions—meaning you can safely go longer between oil changes when following product guidelines.

What should I know before switching to AMSOIL synthetic motor oil?

Switching is simple and doesn’t require any special steps. However, for older engines, it’s a good idea to use AMSOIL Engine and Transmission Flush beforehand to remove built-up contaminants. Pairing your oil change with a new AMSOIL Oil Filter is also recommended for optimal performance.