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Your order may take longer than normal to arrive. We are experiencing extremely high demand and freight carriers are experiencing delays nationwide. LTL shipments are most severely affected.

10W-40 Synthetic Small Engine Oil

Product code : ASFQT-EA

Protects up to 200 hours
Helps extend engine life
Rust-inhibited
Maximizes engine power
Helps cut maintenance costs

Protects up to 200 hours
Helps extend engine life
Rust-inhibited
Maximizes engine power
Helps cut maintenance costs

10W-40 Synthetic Small Engine Oil



Delivers commercial-grade protection and outperforms conventional oils. Tough formulation protects against wear, heat and carbon deposits. Helps maintain power and promotes long engine life. Specifically designed for maximum equipment dependability. Service life up to 200 hours.

See the product data sheet for full details.

EXCELLENT WEAR PROTECTION

  • Shear-stable, high-film-strength formulation fortified with a heavy dose of zinc anti-wear additives.
  • Does not thin out due to mechanical shear, ensuring a thick lubricating film for maximum wear protection.
  • Zinc chemistry forms a durable barrier that protects against metal-to-metal contact.

REDUCES OIL CONSUMPTION

  • Reduced oil consumption 61% in lab testing compared to three leading 10W-30/SAE 30 motor oils.1
  • Heat-resistant synthetic base oils provide low volatility, excellent viscosity stability and strong oxidation resistance.
  • Helps engines run longer between top-offs, providing peace of mind they won’t fail due to oil starvation and will run dependably in the harshest conditions.

FORMULATED FOR POWER

  • Prevents ring and valve sticking while helping eliminate carbon deposits.
  • Reduces piston-ring and cylinder wear for maximum engine compression.
  • Helps produce maximum power throughout their service lives, helping you get more work done.

See the product data sheet for full details.

¹Based on 125-hour lab tests of small engines using AMSOIL 10W-30 Synthetic Small-Engine Oil and three leading 10W-30/SAE 30 motor oils.

10W-40 Synthetic Small Engine Oil



10W-40 Synthetic Small Engine Oil

  • 5
    Extra Engine protection
    By  PAUL,  a  Verified Buyer  on  October 10, 2021

    Describe the issue

    I am a long time Amsoil user. This is my first time using the commercial grade because my local retailer didn't offer it. I use it in all of my yard equipment because of the extra zinc and the added anti-wear protection it offers.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great for air cooled small engines.
    By  BARRY,  a  Verified Buyer  on  September 05, 2021

    Describe the issue

    Contains significant zinc to lubricate valves and rockers.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    prompt delivery, just what J needed
    By  MIKE,  a  Verified Buyer  from  chico ca  on  September 04, 2021

    Describe the issue

    best oil for my gen set
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Small Engine Insurance
    By  Be,  a  Verified Buyer  from  Canada  on  September 03, 2021

    Describe the issue

    The best oil for your small engine .Provides great insurance for your air cooled engine whether it is rough service or casual use. Get it.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great product
    By  Ed,  a  Verified Buyer  from  Bridgeport, WV  on  September 02, 2021

    Describe the issue

    Use this in my Steiner tractor, 26 HP Honda engine. It is air cooled and runs very hot, I trust AMSOIL to keep it well lubricated in all conditions!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    The only synthetic i use in all my small engunes
    By  DETLEF,  a  Verified Buyer  from  NW Florida Panhandle   on  August 22, 2021

    Describe the issue

    Ive been using this small engine synthetic oil for many year, its the only one i would recommend, one old engine is still going strong after 20 years
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Only oil I use in ALL small engines for lawn care business
    By  STEPHEN,  a  Verified Buyer  from  OK  on  August 18, 2021

    Describe the issue

    I use my small engine (4 cycle) in temps from the high 30's to over 100 F. In air cooled engines this great quality oil gives me the protection I want. Great results in multiple Kohler, Kawasaki and Honda 1 and two cylinder air-cooled engines used in harsh conditions.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Lawn mower oil
    By  CHAD,  a  Verified Buyer  from  Canton, Ohio  on  August 05, 2021

    Describe the issue

    After seeing great results with my truck and the signature series oil I had to try this. I used this in a john deere x580 and it seamed to quiet the engine. I recently traded the deere for a new Scag Cheetah 2 and after break in I wanted the best oil I could get for my new toy. It seams to be doing well.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Best of the best
    By  IAN,  a  Verified Buyer  on  June 22, 2021

    Describe the issue

    I’ve been running a Honda eu2000i for 24hrs a day 3 years straight. I shut it down once a week to change the oil and that’s says something
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great product as usual
    By  JASON,  a  Verified Buyer  on  June 07, 2021

    Describe the issue

    Great product, fast shipping.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?