Top 10 Synthetic Oil 10W-40 – Motor Oils

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1. Mobil 1

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

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Mobil 1 #ad - Helps provide low-speed pre-ignition LSPI and timing chain wear protection while keeping your engine clean. Provides excellent internal engine heat protection up to 500 degrees F and low temperature protection to -20 degrees F. Helps to protect your engine from the five factors that can damage engines over time. 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*. Helps extend engine life by working to prevent damaging deposits and sludge buildup.
BrandMobil 1 #ad
ManufacturerExxonMobil #ad
Height12.66 Inches
Length8.1 Inches
Width4.4 Inches
Part Number120771
ModelHigh Mileage
WarrantyLimited Warranty - Please contact manufacturer for full details

2. Valvoline

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Easy Pour 5 Quart, Valvoline High Mileage with MaxLife Technology SAE 10W-40 Synthetic Blend Motor Oil

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Valvoline #ad - Extra detergents help keep older engines cleaner by bonding with and removing sludge and deposits. Extra wear protection helps prevent future engine wear. Seal conditioners rejuvenate aging engine seals to help stop and prevent oil leaks. Anti-oxidants help prevent oil breakdown preventing engine-clogging sludge and deposit formation.
BrandValvoline #ad
ManufacturerValvoline #ad
Height12.66 Inches
Length8.2 Inches
Weight9.59 Pounds
Width4.48 Inches
Part Number000000000000782482
Model881148

3. Castrol

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Castrol 03111C GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quart

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Castrol #ad - Superior detergency that helps prevent deposit build up. Advanced additives that help prevent engine wear. Exceeds ilsac gf-5, aPI SN. Superior oil burn off protection versus leading conventional oils. Seal conditioners help reduce leaks; Bottle Color: Green.
BrandCastrol #ad
ManufacturerCastrol #ad
Height4.5 Inches
Length11.6 Inches
Width9 Inches
Part Number03111C
Model1597C2

4. Mobil 1

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Mobil 1 10W-40 High Mileage Full Synthetic Motor Oil, 5 qt.

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Mobil 1 #ad - Provides wear protection, cleaning power and overall performance. Ideal for passenger cars, SUVs, light vans and trucks. 5-qt bottle ideal for multiple oil changes Helps older engines last for a longer time. Reduces deposits and sludge Contains a seal conditioner to keep seals in working condition and help prevent leaks. High-mileage passenger car motor oil specially designed for older engines.
BrandMobil 1 #ad
ManufacturerMobil 1 #ad
Part Number98KG82
Model13

5. Valvoline

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

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Valvoline #ad - Formulated to provide outstanding wet clutch protection for maximum power transfer and smooth shifting. Full synthetic formula helps maximize power and acceleration. Excellent wear and corrosion protection to help keep the engine performing its best. Added protection against harmful deposits that can decrease engine performance.
BrandValvoline #ad
ManufacturerValvoline #ad
Height9 Inches
Length4.23 Inches
Width2.65 Inches
Part Number507679
Model507679

6. Castrol

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

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Castrol #ad - Product type: Auto Oil. Package weight: 5. 557 kilograms. Superior performance Against Deposits, Wear And Oxidation. Country of origin : United States.
BrandCastrol #ad
ManufacturerCastrol #ad
Part Number06246
Model152DCB-6PK
Warranty3 Months

7. Castrol

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6 Pack 15D1C9, Castrol 06112 POWER 1 4T 10W-40 Synthetic Motorcycle Oil, 1 Quart Bottle

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Castrol #ad - Extreme high temperature air-cooled performance and water-cooled engine performance. Formulated with trizone technology to protect all 3 critical zones: engine, clutch and gearbox. Race derived technology for maximum engine acceleration. Exceeds api sl and jASO MA-2. Excellent shear stability to prevent viscosity breakdown.
BrandCastrol #ad
ManufacturerCastrol #ad
Weight2 Pounds
Part Number06112
Model15D1C9
WarrantyManufacturer Warranty

8. Speedol

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Speedol Zeta 10W-40 Full Synthetic Motor Oil 5-Quarts 4.73 L | Premium Quality High Performance Gasoline and Diesel Engine Oil

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Speedol #ad - Its lubricants and greases have OEM approvals from international engine and machine manufacturers around the world. Offers high performance under difficult conditions. Speedol is a u. S. High resistance to viscosity and thermal breakdown.

Speedol zeta is a fully synthetic gasoline engine oil manufactured for four stroke engines with high technology synthetic base oils and high performance additives. Promotes long engine life due to extremely fast lubrication during starting, and outstanding wear protection during all other engine operating conditions. High technology multi-grade full synthetic motor oil reduces friction in engine parts and provides longer drain intervals.

At low temperatures; helps engine warm up and run smoothly, at high temperatures; resists thinning thus extending engine’s lifespan. Brand that has been manufacturing high performance oils, lubricants and other petroleum products since 1921. Can also be used for API CF performanced diesel engines.
BrandSpeedol #ad
ManufacturerSpeedol #ad
Part NumberZETA-10W40-5QTS

9. Massimo

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MASSIMO MOTOR Premium High Mileage Full Synthetic Oil 10W-40 4 Qt. or 1 Gal for Most UTV and ATV Motorcycle

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Massimo #ad - It promotes smooth shifting and positive clutch engagement. Performance consumption: This synthetic oil delivers reserve protection against high heat. Design: 10w-40 motor oil designed to run low viscosity oil for the high mileage racing motor engine fitted with high performance engines.

Superior temperature resistance: full synthetic motor oils can safely handle higher operating temperatures 10w40 for engines without breaking down. All-season performance for year-round use. Mostly fitted for UTV and ATV Brands. Because of fast and lubrication efficiency is maintained.

Better engine protection: this atv engine oil maintain its viscosity grade, enabling it to offer better engine protection and withstand more extreme engine conditions. Cleaner engines: synthetics oil doesn't break down fast and also severe-service engine protection. Synthetic oils are thus recommended for hot climates as well as heavy-duty, turbocharged, or hard-use applications.
BrandMassimo #ad
ManufacturerMASSIMO MOTOR #ad
Part NumberMMS-MA10401G

10. Amsoil

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Amsoil MCF1G 10W-40 Synthetic Metric Motorcycle Oil, 1-Gallon

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Amsoil #ad - Mcf is thermally stable and contains max levels of oxidation-inhibitor additives. With its hi 11. 1 tbn, compression loss and blow-by. Api sm, jaso ma/ma2. Service life - recommended for use up to twice the motorcycle manufacturer-recommended change interval miles/hours or one year, whichever comes first, in engines and transmissions.

Applications - use amsoil 10w-40 synthetic metric motorcycle oil in motorcycles where 10w-40 motorcycle oil is required. Rust can cause major damage, comes by design and is not natural to motor oils. Mcf contains special anti-rust agents that deliver superior rust protection. Delivers superior rust and corrosion protection - motorcycles are prone to rust from storage, such as uncontrolled wear, however, humidity and short drives. Recommended for transmissions requiring an API GL-1 fluid. Not recommended where an API GL-4 or GL-5 gear oil is required.

Smooth, confident shifts - amsoil synthetic metric motorcycle Oil contains no friction modifiers and promotes smooth shifting and positive clutch engagement. It keeps engines running cool by reducing friction and heat & it contains a heavy treatment of anti-wear additives to reduce wear. Reduces friction, heat and wear - in high heat conditions, mcf exceeds the standard for hi-temperature film strength to deliver excellent wear protection. Controls foam high-rpm operation causes some motor oils to foam.
BrandAmsoil #ad
ManufacturerAMSOIL #ad
Part NumberMCF1G
ModelMCF1G-EA