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AMSOIL Signature Series 10W-30 100% Synthetic Motor OilQuart Bottle
Product code : ATMQT-EA
New Signature Series is rolling out as inventory of the prior formulation is used up. Orders may include new or previous versions. Both meet our performance standards and deliver the protection you demand.
AMSOIL Signature Series 10W-30 100% Synthetic Motor OilQuart Bottle
Product code : ATMQT-EA
New Signature Series is rolling out as inventory of the prior formulation is used up. Orders may include new or previous versions. Both meet our performance standards and deliver the protection you demand.
Current price:
$17.99
Retail Price
Quart Bottle is temporarily out of stock. Try another available size from the menu above.
Estimated delivery by Fri, Sep 4
to Columbus - 43215.
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A New Level of Motor Oil Technology
- Protects – Ultimate long-life anti-wear protection
- Cleans – Fights sludge and carbon buildup1
- Adapts – Responds to changing conditions
- Performs – Proven beyond the standard2
1Based on Sequence VH and IIIH tests.
2Based on double-length Sequence IIIH test. -
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.
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We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
About this item
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Custom-Built to Outperform
AMSOIL Signature Series 100% Synthetic Motor Oil is formulated for drivers who demand the absolute best engine protection. Built with advanced synthetic base oils and a precision-engineered additive system, it is designed to control wear, resist volatility and maintain viscosity under extreme heat, pressure and cold-start conditions. The result is uncompromising film strength, cleaner components and protection that pushes beyond industry standards into a class of its own.
Modern engines place unprecedented stress on motor oil through turbocharging, direct injection, higher temperatures and extended service intervals. Signature Series is engineered to meet those challenges head on, delivering more protection, performance and confidence mile after mile, even during extreme use.See the Product Data Bulletin for full details.
2X BETTER Protection Against Volatility
AMSOIL Signature Series delivers 2X better protection against volatility,3 helping reduce oil consumption, minimize top-offs and keep engines cleaner over time.
3Based on AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil compared to the API SQ limit using the ASTM D5800 Noack volatility test.
Guards Against
Low-speed pre-ignition (LSPI) remains a serious concern in today’s turbocharged, direct-injection engines, where uncontrolled combustion events can damage pistons and other critical components, especially as motor oil ages. AMSOIL Signature Series 100% Synthetic Motor Oil is engineered to help prevent LSPI by maintaining a strong, stable formulation that continues to deliver outstanding performance throughout the drain interval. Even after 25,000 miles of use, Signature Series delivers 4X more piston protection against LSPI4 than the industry standard requires.
4Using AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil following a 25,000-mile service interval in the Sequence IX aged-oil LSPI test.
Preserves Horsepower and Torque
AMSOIL Signature Series 100% Synthetic Motor Oil is built to help engines run stronger, longer5 – helping to protect engines from performance loss throughout their life.
5Using Signature Series 100% Synthetic 5W-30 Motor Oil in a 2025 Ford F-150 Raptor in a 125K-mile accumulation study. Based on comparative start- and end-of-test horsepower and torque.
Proven Cleaning Power
In Sequence IIIH testing, AMSOIL Signature Series delivers 72% more protection against piston deposits than required by industry standards,6 helping ensure cleaner pistons and consistent performance over time.
6Based on AMSOIL Signature Series 5W-30 in the Sequence IIIH Test.
Even after doubling the length of the Sequence IIIH test, Signature Series provided 31% better protection than required,7 demonstrating its ability to maintain cleanliness far beyond industry standards.
7Based on AMSOIL Signature Series 5W-30 in a double-length Sequence IIIH test.
No Sludge, Just Protection
During a 125K-mile accumulation study on a 2025 Ford F-150 Raptor, the engine experienced 0% oil screen plugging.8
8As demonstrated in a 125K-mile accumulation study on a 2025 Ford F-150 Raptor which had 0% plugging.
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star rating
Amsoil product’sBy CLEVE, a Verified Buyer from Milton on August 30, 2026Never had a problem with my Motors running Amsoil.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Excellent money for an Excellent oilBy KEVIN, a Verified Buyer from Engine oil on August 30, 2026Gives my V10 the lubrication it needs to provide HP & Torque to tow the 5-tons it's designed to.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Been using this oil for 16 years with no problemsBy GARY, a Verified Buyer from Raleigh on August 30, 2026I consider AMSOIL Signature Series oil to be the best synthetic oil on the market.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Jeeps first oil changeBy JACOB, a Verified Buyer from Montana on August 30, 2026Made the motor seem a little more noisy then with the factory oil in it since I got it but no issues other then a louder motor noise. Jeep FCA said it's normal and nothing to worry aboutBottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
ExcellentBy Javier, a Verified Buyer from Weslaco, Tx on August 30, 2026Excellent product and these guys don’t mess around they ship FASTBottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Awesome oil and ServiceBy TIM, a Verified Buyer from Dade City Florida on August 30, 2026Always, always here in 2 days. Exactly what I ordered. Can’t ask for more.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
ReviewBy NOVICE, a Verified Buyer from Heber Az on August 30, 2026Good stuff, wish I could have got the oil filter from you but was out of stock. Had to get filters from NAPA platinum filter for synthetic oil.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Great productBy STEVE, a Verified Buyer from Tucson on August 29, 2026Great productBottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Signatures seriesBy CARLOS, a Verified Buyer on August 29, 2026Very goodBottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Trustworthy productBy IAN, a Verified Buyer from Milton Ontario on August 28, 2026Ive trusted this oil for many years now and its never let me down ,I wont trust another brand in my JeepBottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Compare Motor Oil
Data Bulletins-
A New Level of Motor Oil Technology
- Protects – Ultimate long-life anti-wear protection
- Cleans – Fights sludge and carbon buildup1
- Adapts – Responds to changing conditions
- Performs – Proven beyond the standard2
1Based on Sequence VH and IIIH tests.
2Based on double-length Sequence IIIH test. -
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.
-
We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
-
Custom-Built to Outperform
AMSOIL Signature Series 100% Synthetic Motor Oil is formulated for drivers who demand the absolute best engine protection. Built with advanced synthetic base oils and a precision-engineered additive system, it is designed to control wear, resist volatility and maintain viscosity under extreme heat, pressure and cold-start conditions. The result is uncompromising film strength, cleaner components and protection that pushes beyond industry standards into a class of its own.
Modern engines place unprecedented stress on motor oil through turbocharging, direct injection, higher temperatures and extended service intervals. Signature Series is engineered to meet those challenges head on, delivering more protection, performance and confidence mile after mile, even during extreme use.See the Product Data Bulletin for full details.
2X BETTER Protection Against Volatility
AMSOIL Signature Series delivers 2X better protection against volatility,3 helping reduce oil consumption, minimize top-offs and keep engines cleaner over time.
3Based on AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil compared to the API SQ limit using the ASTM D5800 Noack volatility test.
Guards Against
Low-speed pre-ignition (LSPI) remains a serious concern in today’s turbocharged, direct-injection engines, where uncontrolled combustion events can damage pistons and other critical components, especially as motor oil ages. AMSOIL Signature Series 100% Synthetic Motor Oil is engineered to help prevent LSPI by maintaining a strong, stable formulation that continues to deliver outstanding performance throughout the drain interval. Even after 25,000 miles of use, Signature Series delivers 4X more piston protection against LSPI4 than the industry standard requires.
4Using AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil following a 25,000-mile service interval in the Sequence IX aged-oil LSPI test.
Preserves Horsepower and Torque
AMSOIL Signature Series 100% Synthetic Motor Oil is built to help engines run stronger, longer5 – helping to protect engines from performance loss throughout their life.
5Using Signature Series 100% Synthetic 5W-30 Motor Oil in a 2025 Ford F-150 Raptor in a 125K-mile accumulation study. Based on comparative start- and end-of-test horsepower and torque.
Proven Cleaning Power
In Sequence IIIH testing, AMSOIL Signature Series delivers 72% more protection against piston deposits than required by industry standards,6 helping ensure cleaner pistons and consistent performance over time.
6Based on AMSOIL Signature Series 5W-30 in the Sequence IIIH Test.
Even after doubling the length of the Sequence IIIH test, Signature Series provided 31% better protection than required,7 demonstrating its ability to maintain cleanliness far beyond industry standards.
7Based on AMSOIL Signature Series 5W-30 in a double-length Sequence IIIH test.
No Sludge, Just Protection
During a 125K-mile accumulation study on a 2025 Ford F-150 Raptor, the engine experienced 0% oil screen plugging.8
8As demonstrated in a 125K-mile accumulation study on a 2025 Ford F-150 Raptor which had 0% plugging.
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-
star rating
Amsoil product’sBy CLEVE, a Verified Buyer from Milton on August 30, 2026Never had a problem with my Motors running Amsoil.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Excellent money for an Excellent oilBy KEVIN, a Verified Buyer from Engine oil on August 30, 2026Gives my V10 the lubrication it needs to provide HP & Torque to tow the 5-tons it's designed to.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Been using this oil for 16 years with no problemsBy GARY, a Verified Buyer from Raleigh on August 30, 2026I consider AMSOIL Signature Series oil to be the best synthetic oil on the market.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Jeeps first oil changeBy JACOB, a Verified Buyer from Montana on August 30, 2026Made the motor seem a little more noisy then with the factory oil in it since I got it but no issues other then a louder motor noise. Jeep FCA said it's normal and nothing to worry aboutBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
ExcellentBy Javier, a Verified Buyer from Weslaco, Tx on August 30, 2026Excellent product and these guys don’t mess around they ship FASTBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Awesome oil and ServiceBy TIM, a Verified Buyer from Dade City Florida on August 30, 2026Always, always here in 2 days. Exactly what I ordered. Can’t ask for more.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
ReviewBy NOVICE, a Verified Buyer from Heber Az on August 30, 2026Good stuff, wish I could have got the oil filter from you but was out of stock. Had to get filters from NAPA platinum filter for synthetic oil.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great productBy STEVE, a Verified Buyer from Tucson on August 29, 2026Great productBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Signatures seriesBy CARLOS, a Verified Buyer on August 29, 2026Very goodBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Trustworthy productBy IAN, a Verified Buyer from Milton Ontario on August 28, 2026Ive trusted this oil for many years now and its never let me down ,I wont trust another brand in my JeepBottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
