About this item

• Product Overview

  Clings Tenaciously to Parts
  Because building an engine can take from a few days to many months, using an engine assembly lube that clings well to parts for extended periods is critical. AMSOIL Engine Assembly Lube is formulated with a high-viscosity base oil and a unique tackifier for long-lasting, tenacious cling.

  Exceptional Wear Protection
  During initial startup, engines operate momentarily with little-to-no oil pressure, placing camshaft lobes, lifters, rocker arms, bearings and other critical parts at high risk of wear and failure. In addition to inhibiting wear by clinging to parts, AMSOIL Engine Assembly Lube contains high levels of antiwear additives for further protection.

  Inhibits Rust and Corrosion
  An engine can sit in a garage partially assembled for long periods, allowing moisture and oxygen to form rust on exposed metal surfaces. AMSOIL Assembly Lube contains rust and corrosion inhibitors that protect engine components during inactivity.

  Dissolves in Oil
  Grease-based assembly lubes can increase the risk of oil port clogging if the grease is not fully consumed at initial startup, potentially causing engine failure. AMSOIL Engine Assembly Lube is designed to dissolve in oil, helping oil ports remain clean, and helping to eliminate deposit formation under the valve covers and in the oil pan.

  Easy and Precise Application
  AMSOIL Assembly Lube is packaged in convenient 4-oz. tubes, allowing for cleaner, more precise application compared to other products.

  APPLICATIONS
  AMSOIL Engine Assembly Lube is recommended for any new or rebuilt four-stroke engine, including racing and performance engines, and should be applied to all areas of the engine susceptible to initial startup wear.

  • Tenaciously Clings to Parts
  • High in Anti-Wear Additives
  • Dissolves in Oil
  • Provides Rust & Corrosion Protection
  • Recommended for all Four-Stroke Engines, Including High-Performance and Racing Engines

  HEALTH & SAFETY
  This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS). An MSDS is available via the Internet at www.amsoil.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Don't pollute. Return used oil to collection centers.

  For warranty information, visit www.amsoil.com/warranty/.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  SDS

  SDS

  
  
  
• Product Reviews
  4.6 star rating

  Based on 18 reviews

  Based on 18 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Ratchet lubricant
    By  JOHN,  a  Verified Buyer  from  Long Island New York   on  January 04, 2025

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    Great product for rebuilding and ratchet maintenance not to thick and works great for my yearly tool maintenance
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 1 star rating
    Assembly lube
    By  Hiteracing ,  a  Verified Buyer  from  South Boston Va.  on  May 30, 2024

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    Great product
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    Assembly lube
    By  Pancho,  a  Verified Buyer  from  Florida   on  February 06, 2024

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    Was doing cam shoes. Recommend lube for restarting for instant lubricant to new parts
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    No surprise
    By  ROGER,  a  Verified Buyer  from  Arizona  on  February 04, 2024

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    Of Course, Amzoil shines again ! Are there other products on the market that may be less expensive but equally as good? Perhaps, I can't say. But, I don't use, or have a need to use this product on a regular basis. So, I wanted to take the guess work out of the equation, a went straight to what I knew would be excellent. It most certainly was that! No surprise there!!
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Great product
    By  TREVOR,  a  Verified Buyer  from  Holyoke mn  on  July 31, 2023

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    Does what it’s supposed to, sticks to parts yet dissolves in the oil, great for rebuilding.
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Very nice product
    By  ADAM,  a  Verified Buyer  from  Ky.   on  July 27, 2023

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    Highly recommend!
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    Engine Assembly Lube
    By  Eugene,  a  Verified Buyer  from  Brooklyn, NY  on  June 21, 2023

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    Very good engine protector.
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best assembly lube.
    By  RUSS,  a  Verified Buyer  on  January 29, 2023

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    Perfect.
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    Unknown at the moment
    By  CORY,  a  Verified Buyer  on  August 16, 2022

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    No doubt in my mind this will be great stuff
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 1 star rating
    Wasn’t to my standards
    By  KEVIN,  a  Verified Buyer  from  Iowa  on  March 21, 2021

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    I am an engine builder and I ordered this product for engine assembly, the lube is so heavy I was worried about the engine spinning a bearing, I won’t be purchasing again.
    Bottom Line

    No, I would not recommend this to a friend.
    Was this review helpful?

    YES (1) NO (9)

• Highlights

  High-Quality Assembly Lube for Racing, Performance and Other Four-Stroke Engines

  • Formulated to cling to engine parts and provide exceptional wear protection
  • Prevents rust and corrosion in newly built or rebuilt four-stroke engines
  • Designed to dissolve in oil, helping eliminate oil-port clogging and deposit formation
• 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

  Clings Tenaciously to Parts
  Because building an engine can take from a few days to many months, using an engine assembly lube that clings well to parts for extended periods is critical. AMSOIL Engine Assembly Lube is formulated with a high-viscosity base oil and a unique tackifier for long-lasting, tenacious cling.

  Exceptional Wear Protection
  During initial startup, engines operate momentarily with little-to-no oil pressure, placing camshaft lobes, lifters, rocker arms, bearings and other critical parts at high risk of wear and failure. In addition to inhibiting wear by clinging to parts, AMSOIL Engine Assembly Lube contains high levels of antiwear additives for further protection.

  Inhibits Rust and Corrosion
  An engine can sit in a garage partially assembled for long periods, allowing moisture and oxygen to form rust on exposed metal surfaces. AMSOIL Assembly Lube contains rust and corrosion inhibitors that protect engine components during inactivity.

  Dissolves in Oil
  Grease-based assembly lubes can increase the risk of oil port clogging if the grease is not fully consumed at initial startup, potentially causing engine failure. AMSOIL Engine Assembly Lube is designed to dissolve in oil, helping oil ports remain clean, and helping to eliminate deposit formation under the valve covers and in the oil pan.

  Easy and Precise Application
  AMSOIL Assembly Lube is packaged in convenient 4-oz. tubes, allowing for cleaner, more precise application compared to other products.

  APPLICATIONS
  AMSOIL Engine Assembly Lube is recommended for any new or rebuilt four-stroke engine, including racing and performance engines, and should be applied to all areas of the engine susceptible to initial startup wear.

  • Tenaciously Clings to Parts
  • High in Anti-Wear Additives
  • Dissolves in Oil
  • Provides Rust & Corrosion Protection
  • Recommended for all Four-Stroke Engines, Including High-Performance and Racing Engines

  HEALTH & SAFETY
  This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS). An MSDS is available via the Internet at www.amsoil.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Don't pollute. Return used oil to collection centers.

  For warranty information, visit www.amsoil.com/warranty/.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  SDS

  SDS

  
  
  
• Product Reviews
  4.6 star rating

  Based on 18 reviews

  Based on 18 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Ratchet lubricant
    By  JOHN,  a  Verified Buyer  from  Long Island New York   on  January 04, 2025

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Great product for rebuilding and ratchet maintenance not to thick and works great for my yearly tool maintenance
    Bottom Line

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

    YES (0) NO (0)
  • 1 star rating
    Assembly lube
    By  Hiteracing ,  a  Verified Buyer  from  South Boston Va.  on  May 30, 2024

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Great product
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Assembly lube
    By  Pancho,  a  Verified Buyer  from  Florida   on  February 06, 2024

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Was doing cam shoes. Recommend lube for restarting for instant lubricant to new parts
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    No surprise
    By  ROGER,  a  Verified Buyer  from  Arizona  on  February 04, 2024

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Of Course, Amzoil shines again ! Are there other products on the market that may be less expensive but equally as good? Perhaps, I can't say. But, I don't use, or have a need to use this product on a regular basis. So, I wanted to take the guess work out of the equation, a went straight to what I knew would be excellent. It most certainly was that! No surprise there!!
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Great product
    By  TREVOR,  a  Verified Buyer  from  Holyoke mn  on  July 31, 2023

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Does what it’s supposed to, sticks to parts yet dissolves in the oil, great for rebuilding.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Very nice product
    By  ADAM,  a  Verified Buyer  from  Ky.   on  July 27, 2023

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    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Highly recommend!
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Engine Assembly Lube
    By  Eugene,  a  Verified Buyer  from  Brooklyn, NY  on  June 21, 2023

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Very good engine protector.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Best assembly lube.
    By  RUSS,  a  Verified Buyer  on  January 29, 2023

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Perfect.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Unknown at the moment
    By  CORY,  a  Verified Buyer  on  August 16, 2022

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    No doubt in my mind this will be great stuff
    Bottom Line

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

    YES (0) NO (0)
  • 1 star rating
    Wasn’t to my standards
    By  KEVIN,  a  Verified Buyer  from  Iowa  on  March 21, 2021

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I am an engine builder and I ordered this product for engine assembly, the lube is so heavy I was worried about the engine spinning a bearing, I won’t be purchasing again.
    Bottom Line

    No, I would not recommend this to a friend.
    Was this review helpful?

    YES (1) NO (9)