Should I use one oil in all three holes in my bike?
Learn the pros and cons of using one lubricant versus three specialized fluids for your V-twin motorcycle.
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Why 500,000+ Customers Trust AMSOIL
Over 50 years of synthetic oil innovation
Expert AMSOIL Knowledge
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Why a Small Dent Can Cause Big Problems for Your Filter
Discover why proper filter handling matters and how dents can lead to catastrophic engine damage.
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Read More →Frequently Asked Questions
What makes AMSOIL better than conventional motor oil?
AMSOIL synthetic motor oils are engineered from premium synthetic base stocks and advanced additives. This provides superior wear protection, better fuel economy, extended drain intervals, and exceptional performance in extreme temperatures compared to conventional petroleum-based oils.
Can I really go longer between oil changes with AMSOIL?
Yes. AMSOIL synthetic motor oils are formulated for extended drain intervals in normal service. Always follow your vehicle manufacturer's recommendations and consider severe service conditions.
Will AMSOIL void my vehicle warranty?
No. AMSOIL synthetic lubricants meet or exceed manufacturer specifications and API requirements. Using AMSOIL will not void your vehicle warranty.
Why isn't AMSOIL sold in auto parts stores?
AMSOIL uses exclusive distribution through independent dealers like National Synthetics. This supports personalized service, expert recommendations and product authenticity.
How do I know which AMSOIL product is right for my vehicle?
Use the AMSOIL Product Guide for specific recommendations, or contact National Synthetics for personalized assistance.
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