About this item

• Product Overview

  Specially engineered for classic cars. Contains high levels of ZDDP, top-tier additives and rust inhibitors to protect your passion, deliver maximum performance and keep your classic engine free of rust and corrosion in storage.

  See the Product Data Bulletin for full details.

  ---

  PROTECTS FLAT-TAPPET CAMS

  • Formulated with high levels of ZDDP to protect flat-tappet cams, lifters, rockers and other areas susceptible to wear.
  • High-zinc, high-phosphorus formulation provides the extra wear protection critical splash-lubricated components require.
  • Fights wear to help prevent compression loss for maximum horsepower.

  ---

  HELPS PREVENT RUST & CORROSION

  • Formulated with a unique blend of rust and corrosion inhibitors to ensure maximum protection during long-term storage.
  • Prevented rust and corrosion in industry standard testing (ASTM D1748-10) for excellent engine protection.

  ---

  Z-ROD Delivers Superior Rust Protection

  In industry standard testing, AMSOIL Z-ROD completely prevented rust formation while a leading competitor did not.^A

  ᴬ Based upon in-house testing of AMSOIL Z-ROD 10W-40 and a leading competitor obtained on 7/25/2019 in ASTM D1748-10.

  See the Product Data Bulletin for full details.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS (English)

  SDS (Français)

  
  
  
• Product Reviews
  5 star rating

  Based on 75 reviews

  Based on 75 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Amsoil Z-Rod
    By  GREG,  a  Verified Buyer  from  Tennessee   on  April 29, 2026

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    Love this all works great and does what it’s supposed to …
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    Perfect blend of Zinc
    By  JOEL,  a  Verified Buyer  on  April 19, 2026

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    This is a high quality oil with the perfect amount of zinc for my classic car with flat tappet cam lifters. The oil also seems to stay cleaner longer when used with a AMSOIL filler
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    A few years now
    By  STEPHEN,  a  Verified Buyer  from  Worthington Ohio  on  March 24, 2026

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    Always my first choice and has been since I discovered it.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Z Rod for my Flat Tappet engine
    By  DAMON D,  a  Verified Buyer  from  Illinois   on  March 18, 2026

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    Have been using this since I rebuilt my flat tappet cam engine. Its been great and oil comes out clean at each change even in a boosted engine. Worth every penny.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Resto mod
    By  STEVE,  a  Verified Buyer  on  February 26, 2026

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    the best oil you can find for a resto mod
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Z-Rod
    By  JOE,  a  Verified Buyer  from  Boise  on  January 04, 2026

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    I use Z-Rod in my pre 80’s vehicles.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    ZROD 10W-30
    By  DENNIS M,  a  Verified Buyer  from  Grand Iland, FL  on  December 21, 2025

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    Use it on my 2004 Jeep TJ Rubicon 4.0 LTR engine. Keeps the engine noise quiet.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Way better quality oil than in stores.
    By  GREG,  a  Verified Buyer  from  Cotati  on  December 08, 2025

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    We are a very happy with our oil!!!!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Amsoil Z rod oil
    By  TIMOTHY,  a  Verified Buyer  from  Shorewood, Illinois  on  December 03, 2025

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    Great product at a reasonable price
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Great
    By  DOMINIC,  a  Verified Buyer  from  Ohio   on  November 22, 2025

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    Good stuff
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)

• Highlights

  • Engineered for classic vehicles
  • Helps retain horsepower
  • High-zinc formula protects flat-tappet cams, lifters, rockers & other critical components
  • Protects against rust during storage
• Returns

  We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.

• Payments

  We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.

• Product Overview

  Specially engineered for classic cars. Contains high levels of ZDDP, top-tier additives and rust inhibitors to protect your passion, deliver maximum performance and keep your classic engine free of rust and corrosion in storage.

  See the Product Data Bulletin for full details.

  ---

  PROTECTS FLAT-TAPPET CAMS

  • Formulated with high levels of ZDDP to protect flat-tappet cams, lifters, rockers and other areas susceptible to wear.
  • High-zinc, high-phosphorus formulation provides the extra wear protection critical splash-lubricated components require.
  • Fights wear to help prevent compression loss for maximum horsepower.

  ---

  HELPS PREVENT RUST & CORROSION

  • Formulated with a unique blend of rust and corrosion inhibitors to ensure maximum protection during long-term storage.
  • Prevented rust and corrosion in industry standard testing (ASTM D1748-10) for excellent engine protection.

  ---

  Z-ROD Delivers Superior Rust Protection

  In industry standard testing, AMSOIL Z-ROD completely prevented rust formation while a leading competitor did not.^A

  ᴬ Based upon in-house testing of AMSOIL Z-ROD 10W-40 and a leading competitor obtained on 7/25/2019 in ASTM D1748-10.

  See the Product Data Bulletin for full details.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS (English)

  SDS (Français)

  
  
  
• Product Reviews
  5 star rating

  Based on 75 reviews

  Based on 75 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Amsoil Z-Rod
    By  GREG,  a  Verified Buyer  from  Tennessee   on  April 29, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Love this all works great and does what it’s supposed to …
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Perfect blend of Zinc
    By  JOEL,  a  Verified Buyer  on  April 19, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    This is a high quality oil with the perfect amount of zinc for my classic car with flat tappet cam lifters. The oil also seems to stay cleaner longer when used with a AMSOIL filler
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    A few years now
    By  STEPHEN,  a  Verified Buyer  from  Worthington Ohio  on  March 24, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Always my first choice and has been since I discovered it.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Z Rod for my Flat Tappet engine
    By  DAMON D,  a  Verified Buyer  from  Illinois   on  March 18, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Have been using this since I rebuilt my flat tappet cam engine. Its been great and oil comes out clean at each change even in a boosted engine. Worth every penny.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Resto mod
    By  STEVE,  a  Verified Buyer  on  February 26, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    the best oil you can find for a resto mod
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Z-Rod
    By  JOE,  a  Verified Buyer  from  Boise  on  January 04, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I use Z-Rod in my pre 80’s vehicles.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    ZROD 10W-30
    By  DENNIS M,  a  Verified Buyer  from  Grand Iland, FL  on  December 21, 2025

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Use it on my 2004 Jeep TJ Rubicon 4.0 LTR engine. Keeps the engine noise quiet.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Way better quality oil than in stores.
    By  GREG,  a  Verified Buyer  from  Cotati  on  December 08, 2025

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    We are a very happy with our oil!!!!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Amsoil Z rod oil
    By  TIMOTHY,  a  Verified Buyer  from  Shorewood, Illinois  on  December 03, 2025

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Great product at a reasonable price
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Great
    By  DOMINIC,  a  Verified Buyer  from  Ohio   on  November 22, 2025

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Good stuff
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)