Top 10 Best 10w40 Synthetic Motor Oil

of November 2024
1
Best ChoiceBest Choice
Ultra1Plus SAE 10W-40 Full Synthetic 4T Engine Oil, API SN, JASO MA2 (5 Gallon
ULTRA 1PLUS
ULTRA 1PLUS
10
Exceptional
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2
Best ValueBest Value
Mobil 1 High Mileage Full Synthetic Motor Oil 10W-40, 5 Quart, Gray
Mobil 1
Mobil 1
9.9
Exceptional
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3
Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quarts
Castrol
Castrol
9.8
Exceptional
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4
Valvoline High Mileage with MaxLife Technology SAE 10W-40 Synthetic Blend Motor
Valvoline
Valvoline
9.7
Exceptional
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5
Valvoline 4-Stroke Motorcycle Full Synthetic 10W-40 Motor Oil 1 QT
Valvoline
Valvoline
9.6
Exceptional
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6
Castrol 06246 EDGE 10W-40 Advanced Full Synthetic Motor Oil, 1 Quart, 6 Pack
Castrol
Castrol
9.5
Excellent
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7
Quicksilver 8M0060085 10W-40 Full Synthetic 4-Stroke Motorcycle Oil  1 Gallon
Quicksilver
Quicksilver
9.4
Excellent
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8
Royal Purple 36140 HPS 10W-40 High Performance Street Motor Oil - 1 Quart (Case
Royal Purple
Royal Purple
9.3
Excellent
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9
Castrol 03094 GTX 10W-40 Motor Oil, 5 Quart
Castrol
Castrol
9.2
Excellent
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10
Mobil 1 103536 10W-40 High Mileage Motor Oil - 1 Quart (Pack of 6)
Mobil 1
Mobil 1
9.1
Excellent
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11
Volvo Penta New OEM 10W-40 Full Synthetic Gasoline Engine Oil, 21681795
Volvo Penta
Volvo Penta
9.0
Excellent
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About 10w40 Synthetic Motor Oil

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Ultra1Plus SAE 10W-40 Full Synthetic 4T Engine Oil, API SN, JASO MA2 (5 Gallon Pail)

ULTIMATE PERFORMANCE Unleash maximum power with our U1P-Ride SAE 10W-40 Full Synthetic 4T Engine Oil. Exceeds JASO MA2 API SN standards for exceptional wear protection, ensuring top-tier performance for motorcycles and ATVs.. CLUTCH OPTIMIZATION JASO MA2 API SN certified for superior clutch performance at all speeds. Achieve smooth start-ups, acceleration, and full-speed operation, enhancing your riding experience.. EXTENDED ENGINE LIFE Exceptional wear protection extends engine, gearbox, and clutch life, minimizing maintenance costs. Proven under extreme racing conditions, it ensures durability for on-road, off-road, street, or motorsports use.. TEMPERATURE RESILIENCE Ideal for liquid-cooled or air engines, our synthetic oil improves thermal stability and fuel efficiency. Withstand extreme temperatures and enjoy optimal engine cleanliness, reducing sludge buildup.. VERSATILE COMPATIBILITY Tailored for 4-stroke motorcycles and ATVs, with or without catalytic converters. Our 10W-40 full synthetic 4T engine oil ensures smoother shifting, enhanced clutch precision, and compatibility with previous certifications..

Mobil 1 High Mileage Full Synthetic Motor Oil 10W-40, 5 Quart, Gray

Mobil 1 High Mileage full-synthetic motor oil 10W-40 is designed for engines with over 75,000 miles to go up to 10,000 miles between oil changes.. Utilizes Mobil 1s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness. Meets ILSAC GF-6 standards to help provide low-speed pre-ignition LSPI and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy. Provides excellent internal engine heat protection up to 500 degrees F and low temperature protection to -30 degrees F. Helps extend engine life by working to prevent damaging deposits and sludge buildup.

Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quarts

Phosphorus Replacement Technology to help extend the life of the emission system. Superior dispersancy that fights sludge build up. Exceptional oil burn-off protection exceeding industry standards, based on API and ACEA volatility specifications. Seal conditioners to help reduce leaks. Advanced additives that minimize engine wear.

Valvoline High Mileage with MaxLife Technology SAE 10W-40 Synthetic Blend Motor Oil 5 QT

MaxLife Technology prevents engine breakdown with 40 better wear protection than the industry standard. Includes seal conditioners to reduce oil consumption and oil leaks in high mileage engines.. Added detergents reduce sludge, corrosion, rust and deposits to help keep motors clean inside and ensure a smooth-running engine.. Advanced friction-fighting additives help maximize performance and improve fuel efficiency.. Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN Plus, API SN. American made and formulated, from the Original Motor Oil brand trusted for more than 150 years.

Valvoline 4-Stroke Motorcycle Full Synthetic 10W-40 Motor Oil 1 QT

ANTI-FRICTION FORMULATION is specially designed for the extreme temperatures and high RPMs of 4-stroke motorcycles. FULL SYNTHETIC FORMULA MAXIMIZES POWER AND ACCELERATION with advanced additives engineered to outperform. OUTSTANDING WET CLUTCH PROTECTION FOR SMOOTH SHIFTING and maximum performance. PROTECTS AGAINST HARMFUL DEPOSITS  SLUDGE that may reduce oil flow and rob your engine of power and efficiency. RESISTS RUST, CORROSION AND WEAR caused by acids and condensation. AMERICAN MADE FORMULATED to maximize your engines life and improve its performance.

Castrol 06246 EDGE 10W-40 Advanced Full Synthetic Motor Oil, 1 Quart, 6 Pack

Superior Performance Against Deposits, Wear And Oxidation. Product Type Auto Oil. Country Of Origin United States. Package Weight 5.557 Kilograms.

Quicksilver 8M0060085 10W-40 Full Synthetic 4-Stroke Motorcycle Oil 1 Gallon

PERFORMANCE - Full synthetic formula with excellent film strength to resist shear and oxidation for maximum fluid life. PROTECTION Additives protect against corrosion of internal engine components and provides overall engine wear protection in high heat conditions. PEACE OF MIND - Easy starting and instant cold flow engine protection in low temperatures. HARSH CONDITIONS Optimizes clutch performance even in wet clutch applications. FITS EVERYTHING Meets or exceeds all major powersports vehicle manufacturers warranty requirements.

Royal Purple 36140 HPS 10W-40 High Performance Street Motor Oil - 1 Quart (Case of 6)

Proprietary Synerlec technology elevates film strength to 3X to 4X that of other synthetic engine oils for outstanding valvetrain protection. Formulated with up to 30 more anti-wear chemistry than other conventional and synthetic spec engine oils. Superior corrosion protection. Improved sealing between the piston ring and cylinder wall maximizes horsepower and torque and optimizes fuel economy. Exceptionally high film strength for dramatic reductions in engine wear and reduced engine heat to extend the life of your engine.

Castrol 03094 GTX 10W-40 Motor Oil, 5 Quart

Unique TriShield technology provides superior deposit protection. Maximum protection against viscosity and thermal breakdown. Ultra low friction to improve gas mileage Bottle Color White. Premium, custom made additives enable advanced performance. Exceeds ILSAC GF-5, API SN.

Mobil 1 103536 10W-40 High Mileage Motor Oil - 1 Quart (Pack of 6)

Package Dimensions 9.13 L x 9.75 H x 7.75 W inches. Package Weight 12.5 pounds. Country of Origin United States. Part number 103536-CASE.

Volvo Penta New OEM 10W-40 Full Synthetic Gasoline Engine Oil, 21681795

One 1 gallon of 10W-40 full synthetic gasoline engine oil. Protects internal engine components under both high and low extreme temperatures. Easy cold starting and better high temp protection. Superseded From 3847307. Maximizes HP oil pressure in engine testing.
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