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AMSOIL Premium Synthetic Lubricants - Current Promotion

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Independent AMSOIL Dealer — Premium Synthetic Oil, Filters & Lubricants

Buy direct from National Synthetics with expert dealer support, fast shipping, and the full AMSOIL catalog.

Why 500,000+ Customers Trust AMSOIL

Over 50 years of synthetic oil innovation

75%

Better Protection

vs. conventional oils
25K

Mile Intervals

Extended drain capability
-65°F

Cold Flow

Extreme temp protection
50+

Years

First synthetic in USA

Featured AMSOIL Products

Our most popular synthetic lubricants

Drive up to 20,000 miles or one year between oil changes
AMSOIL Extended-Life 100% Synthetic Motor Oil 0W-20

AMSOIL Extended-Life 100% Synthetic Motor Oil 0W-20

Product Code: XLZQT-EA

5.0 (1,442 reviews)
Retail:
Preferred Customer Savings
~25%off retail

Join the Preferred Customer program to save approximately 25% off the retail price

SQ (Resource Conserving), SP, SN Plus, GF-7A, GF-6A, GF-5
Free Shipping $100+
Show My Price Full Specs & Tests

National Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure

Proven in 180,000-mile severe-service taxi fleet trial
AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid

AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid

Product Code: ATFPK-EA

5.0 (921 reviews)
Retail:
Preferred Customer Savings
~25%off retail

Join the Preferred Customer program to save approximately 25% off the retail price

DEXRON II, DEXRON III, MERCON, MERCON V
Free Shipping $100+
Show My Price Full Specs & Tests

National Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure

75% more engine protection against horsepower loss and wear
AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil

AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil

Product Code: AZFQT-EA

5.0 (6,629 reviews)
Retail:
Preferred Customer Savings
~25%off retail

Join the Preferred Customer program to save approximately 25% off the retail price

Guaranteed 25,000 / 1 year
SP, SN PLUS, SN, MS-A0921, MS-12633, MS-10725, MS-10850
Free Shipping $100+
Show My Price Full Specs & Tests

National Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure

Expert AMSOIL Knowledge

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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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