Premium synthetic lubricants for every engine
Over 50 years of synthetic oil innovation
Our most popular synthetic lubricants
AMSOIL Extended-Life 100% Synthetic Motor Oil 0W-20
Product Code: XLZQT-EA
National Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure
AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid
Product Code: ATFPK-EA
National Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure
AMSOIL SEVERE GEAR 100% Synthetic Extreme-Pressure Gear Lube 75W-90
Product Code: SVGPK-EA
National Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure
Product Code: AGCSC-EA
National Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure
AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil
Product Code: AZFQT-EA
National Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure
AMSOIL Miracle Wash Waterless Wash and Wax Spray
Product Code: AMWSC-EA
National Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure
Get the most from your AMSOIL investment
Learn the pros and cons of using one lubricant versus three specialized fluids for your V-twin motorcycle.
Read More →Discover why proper filter handling matters and how dents can lead to catastrophic engine damage.
Read More →Compare AMSOIL and Castrol across performance, protection, and value for your engine.
Read More →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.
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.
No. AMSOIL synthetic lubricants meet or exceed manufacturer specifications and API requirements. Using AMSOIL will not void your vehicle warranty.
AMSOIL uses exclusive distribution through independent dealers like National Synthetics. This supports personalized service, expert recommendations and product authenticity.
Use the AMSOIL Product Guide for specific recommendations, or contact National Synthetics for personalized assistance.
Join hundreds of thousands of satisfied customers who trust AMSOIL for superior engine protection.
