10W-40 Synthetic Small Engine Oil - Commercial Grade (ASF)
 10W-40 Synthetic Small Engine Oil - Commercial Grade (ASF)

Formulated to outperform passenger-car/light-truck oils, AMSOIL Synthetic Small-Engine Oil protects against wear, deposits and oil consumption in over-worked, under-maintained small engines professionals rely on to make a living.

Package sizes include:

1-Quart Bottle
1-Gallon Bottle
5-Gallon Pail
55-Gallon Drum

Product Code: ASF • Brand: AMSOIL




MSDS Data Sheet

Product Details Tech Data Reviews & Rating

Product Applications
Use the appropriate viscosity of Synthetic Small-Engine Oil in applications that require any of the following specifications:

• API SL, SJ, SH, SG...(Gasoline)
• API CF, CD (Diesel)
• JASO MA/MA2 (Wet Clutch)

Use 10W-40 Synthetic Small-Engine Oil in small engines found in (not limited to) mowers (zero-turn, riding, stand-on, push), generators, power washers and other equipment that requires SAE 10W-40 or 15W-40 motor oil, including (and not limited to):

• Mowers (zero-turn, riding, stand-on, push)
• Generators
• Power washers

Made by (and not limited to):

• Kubota®
• Kawasaki®
• Robin®
• Onan®
• Linamar®
• Vanguard®

Equipment types include (and not limited to):

• Maintenance equipment
• Tractors
• Lawn and garden equipment
• Compactors
• Pumps
• Light towers
• Log splitters
• Welders
• Cement mixers and trowels
• Skid-steers
• Excavators
• Rototillers
• Compressors

Product Description
Using a high-quality small-engine oil has a direct effect on efficiency and profitability. Over time, wear and deposits rob small engines of power, reducing productivity. High heat can cause oils not formulated for severe service to boil off, leading to increased oil consumption, forcing the work crew to continually top-off the oil. AMSOIL Synthetic Small-Engine Oil is a tough formulation designed to preserve engine power while fighting oil consumption, helping professionals work more efficiently and save money on maintenance.

Fights Power Loss
Continuous severe-service operation accelerates wear and leads to harmful deposits that can stick rings and valves, robbing the engine of power. Power loss means less productivity and more maintenance. Synthetic Small-Engine Oil is a tough synthetic oil chemically engineered with anti-wear additives and heat-resistant anti-oxidants that protect pistons and bearings. After 500 hours of severe-service lab testing, AMSOIL 10W-40 Synthetic Small-Engine Oil virtually eliminated wear and deposits, helping preserve engine power and ensure productivity (see image).

Piston Deposit Test

Reduces Oil Consumption
Commercial-grade small engines run hot, with oil temperatures reaching 250°F and higher. High heat causes standard-service oils to vaporize and exit the crankcase vent, leading to increased oil consumption. Heat also breaks down oil and forms deposits that lead to piston-ring sticking. Stuck rings fail to seal the combustion chamber and keep oil from entering and burning. As a result, workers must diligently check and top-off the oil to ensure the engine is protected, wasting time and money. AMSOIL Synthetic Small-Engine Oil’s heat-stable synthetic base oils withstand extreme heat better than other oils. In lab testing 10W-40 Synthetic Small-Engine Oil reduced oil consumption 61 percent compared to three leading 10W-40/SAE 40 motor oils**. It keeps engines clean for peak efficiency and reduced maintenance.

diesel oil Scuffing Test

Long Service Life
On busy job sites, equipment maintenance can easily be delayed or overlooked completely. If using standard-service motor oils, high rates of oil consumption can leave the engine unprotected for extended periods, and it’s only a matter of time before catastrophic wear sets in. AMSOIL Synthetic Small-Engine Oil lasts longer than conventional oil, providing peace of mind that engines are protected, even when maintenance is delayed.

• Preserves engine power
• Helps cut maintenance costs
• Fights heat and deposits

COMPATIBILITY
AMSOIL Synthetic Small-Engine Oil is compatible with other conventional and synthetic motor oils. Mixing AMSOIL motor oils with other oils, however, will shorten the oil’s life expectancy and reduce the performance benefits.

Aftermarket oil additives are not recommended for use with AMSOIL motor oils.

SERVICE LIFE
AMSOIL Synthetic Small-Engine Oil is a long-life formulation that can last longer than conventional petroleum oils. It provides an extra measure of protection when equipment typically goes longer between oil changes than is recommended by the equipment manufacturer. Due to wide variances in operating conditions and maintenance practices, AMSOIL recommends extending drain intervals when monitored by oil analysis or following the equipment manufacturer-established drain intervals.

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).

Click here to view the MSDS Data Sheet for AMSOIL ASF.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.





Click Here to Report Problems Or Comments
Wholesale AccountsOrdering InformationRequest Free CatalogOur TechnologyResearch ResourcesAMSOIL TestimonialsFind AMSOIL DealerFind AMSOIL RetailerContact UsDealer Services
3 Easy ways to place your order now!



About AMSOIL
AMSOIL HistoryCompany of Firsts40+ Years Track RecordProduct Introduction CronologyAMSOIL & EnvironmentISO 9001:2000 CertifiedProduct WarrantyAbout WBoil.com
Motor Oil
Gasoline Engine Oils
0W-16 OE Series Synthetic Motor Oil (OES)0W-16 Signature Series Synthetic Motor Oil (AZS)0W-16 100% Synthetic Hybrid Motor Oil (HE016)0W-20 Signature Series Synthetic Motor Oil (ASM)0W-20 Extended Life Synthetic Motor Oil (XLZ)0W-20 OE Series Synthetic Motor Oil (OEZ)0W-20 LS European Motor Oil (AFE)0W-20 LS-VW European Motor Oil (EZT)0W-20 100% Synthetic High-Mileage Oil (HM020)0W-20 100% Synthetic Hybrid Motor Oil (HE020)0W-20 Synthetic-Blend Motor Oil (SB020)0W-30 MS European Motor Oil (EOT)0W-30 Signature Series (AZO)0W-40 Signature Series Motor Oil (AZF)0W-40 FS European Motor Oil (EFO)0W-40 OE Series Synthetic Motor Oil (OEG)5W-20 Extended Life Synthetic Motor Oil (XLM)5W-20 OE Series Synthetic Motor Oil (OEM)5W-20 Signature Series Synthetic Motor Oil (ALM)5W-20 100% Synthetic High-Mileage Oil (HM520)5W-20 Synthetic-Blend Motor Oil (SB520)5W-30 Signature Series Synthetic Motor Oil (ASL)5W-30 Extended Life Synthetic Motor Oil (XLF)5W-30 LS European Motor Oil (AEL)5W-30 OE Series Synthetic Motor Oil (OEF)5W-30 100% Synthetic High-Mileage Oil (HM530)5W-30 Synthetic-Blend Motor Oil (SB530)5W-40 MS European Motor Oil (AFL)5W-40 FS European Motor Oil (EFM)5W-50 Signature Series Motor Oil (AMR)10W-30 Signature Series Synthetic Motor Oil (ATM)10W-30 Extended Life Synthetic Motor Oil (XLT)10W-30 OE Series Synthetic Motor Oil (OET)10W-30 100% Synthetic High-Mileage Oil (HM1030)10W-40 Extended Life Synthetic Motor Oil (XLO)10W-40 Premium Protection Motor Oil (AMO)10W-60 FS European Motor Oil (ETS)20W-50 Premium Protection Motor Oil (ARO)
Diesel Engine Oils
0W-20 LS European Motor Oil (AFE)0W-20 LS-VW European Motor Oil (EZT)0W-20 Synthetic Diesel Oil (DP020)0W-30 MS European Motor Oil (EOT)0W40 Signature Series CK-4 Diesel Oil (DZF)0W-40 FS European Motor Oil (EFO)5W-30 LS European Motor Oil (AEL)5W30 Signature Series CK-4 Diesel Oil (DHD)5W-30 Synthetic Diesel Oil (DP530)5W-40 MS European Motor Oil (AFL)5W40 Signature Series CK-4 Diesel Oil (DEO)5W40 Heavy-Duty CK-4 Diesel Oil (ADO)5W-40 FS European Motor Oil (EFM)10W30 Heavy-Duty CK-4 Diesel Oil (ADN)10W30 Signature Series Diesel Oil (DTT)10W30 Commercial Grade Diesel Oil (SBDT)10W-40 Premium Protection Motor Oil (AMO)10W-60 FS European Motor Oil (ETS)15W-40 Heavy-Duty Diesel & Marine (AME)15W40 Heavy-Duty CK-4 Diesel Oil (ADP)15W40 Signature Series CK-4 Diesel Oil (DME)15W40 Commercial Grade Diesel Oil (SBDF)20W-50 Premium Protection Motor Oil (ARO)20W-50 DOMINATOR Competition Diesel Oil (DCO)
Motorcycle & Scooter Oils
V-Twin Oil Change Kit (HDCK)SAE 60 Motorcycle Oil (MCS)Engine Assembly Lube (EAL)V-Twin Synthetic Primary Fluid (MVP)V-Twin Synthetic Transmission Fluid (MVT)V-Twin Oil Change Kit (HDBK)V-Twin Oil Change Kit (HDMC)V-Twin Oil Change Kit (HDMB)5W-40 Synthetic Metric Motorcycle Oil (MMF)10W-30 Synthetic Metric Motorcycle Oil (MCT)10W-40 Synthetic Metric Motorcycle Oil (MCF)10W-40 Formula 4 Stroke® Synthetic Scooter Oil (ASO)10W-40 Dirt Bike Oil (DB40)10W-50 Dirt Bike Oil (DB50)10W-60 Dirt Bike Oil (DB60)15W-50 Synthetic Metric Motorcycle Oil (MFF)15W-60 Synthetic V-Twin Motorcycle Oil (MSV)20W-40 Synthetic V-Twin Motorcycle Oil (MVI)20W-50 Synthetic V-Twin Motorcycle Oil (MCV)
Marine Motor Oil
Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil (ATO)HP Marine Synthetic 2-Stroke Oil (HPM)10W-30 Formula 4-Stroke® Marine Synthetic Motor Oil (WCT)10W-40 Formula 4-Stroke® Marine Synthetic Motor Oil (WCF)15W-40 Heavy-Duty Diesel & Marine (AME)25W-40 Synthetic Blend Marine Engine Oil
Racing & High Performance
SAE 60 Dominator® Synthetic Racing Oil (RD60)Briggs & Stratton Synthetic 4T Racing Oil (GBS2960)Dominator® Synthetic 2-Cycle Racing Oil (TDR)SAE 30 Break-In Oil (BRK)Engine Assembly Lube (EAL)5W-20 Dominator® Synthetic Racing Oil (RD20)10W-30 Dominator® Synthetic Racing Oil (RD30)10W-40 Dominator® Synthetic Racing Oil (RD40)15W-50 Dominator® Synthetic Racing Oil (RD50)
Classic & High Performance
SAE 30 Break-In Oil (BRK)Engine Assembly Lube (EAL)10W-30 Z-ROD Synthetic Motor Oil (ZRT)10W-40 Premium Protection Motor Oil (AMO)10W-40 Z-ROD Synthetic Motor Oil (ZRD)20W-50 Premium Protection Motor Oil (ARO)20W-50 Z-ROD Synthetic Motor Oil (ZRF)
European Motor Oils
0W-20 LS European Motor Oil (AFE)0W-20 LS-VW European Motor Oil (EZT)0W-30 MS European Motor Oil (EOT)0W-40 FS European Motor Oil (EFO)5W-30 LS European Motor Oil (AEL)5W-40 MS European Motor Oil (AFL)5W-40 FS European Motor Oil (EFM)10W-60 FS European Motor Oil (ETS)
High-Mileage Motor Oil
0W-20 100% Synthetic High-Mileage Oil (HM020)5W-20 100% Synthetic High-Mileage Oil (HM520)5W-30 100% Synthetic High-Mileage Oil (HM530)10W-30 100% Synthetic High-Mileage Oil (HM1030)
Hybrid Motor Oil
0W-16 100% Synthetic Hybrid Motor Oil (HE016)0W-20 100% Synthetic Hybrid Motor Oil (HE020)
4-Stroke & Small Engine Oils
Briggs & Stratton Synthetic 4T Racing Oil (GBS2960)0W-40 Formula 4-Stroke® PowerSports Synthetic Motor Oil (AFF)5W-30 Synthetic Small Engine Oil (AES)10W-30 Formula 4-Stroke® Marine Synthetic Motor Oil (WCT)10W-30 Synthetic Small Engine Oil (ASE)10W-40 Formula 4 Stroke® Synthetic Scooter Oil (ASO)10W-40 Formula 4-Stroke® Marine Synthetic Motor Oil (WCF)10W-40 Synthetic Small Engine Oil (ASF)15W-50 Synthetic Small Engine Oil (SEF)25W-40 Synthetic Blend Marine Engine Oil
ATV & UTV Motor Oils
ATV/UTV Oil Change Kits (Polaris)ATV/UTV Oil Change Kits (Can-Am)0W-50 Synthetic ATV/UTV Motor Oil5W-40 Synthetic ATV/UTV Motor Oil5W-50 Synthetic ATV/UTV Motor Oil10W-30 Synthetic ATV/UTV Motor Oil10W-40 Synthetic ATV/UTV Motor Oil
2 Cycle / 2 Stroke Motor Oil
INTERCEPTOR™ 2-Cycle Oil (AIT) Synthetic 2-Stroke Injector Oil (AIO)Dominator® Synthetic 2-Cycle Racing Oil (TDR)Saber™ Synthetic 100:1 Pre-Mix 2-Cycle Oil (ATP)Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil (ATO)HP Marine Synthetic 2-Stroke Oil (HPM)
Natural Gas Engine Oil
15W-40 (SAE 40) Synthetic Vehicular Natural Gas Engine Oil (ANGV)20W-40 (SAE 40) Synthetic Stationary Natural Gas Engine Oil (ANGS)
Oil & Air Filtration
AMSOIL Motorcycle FiltersMotorcycle Oil Filter (Nano Fiber)AMSOIL Automotive Oil FiltersFull Flow Oil Filter (Nano Fiber)AMSOIL Ea Heavy Duty Oil FiltersHeavy Duty Extended-Life Oil FilterAMSOIL By-Pass Oil Filteration By-Pass Filteration Kits
BMK21 Universal Single-Remote Bypass SystemBMK22 DUAL-GARD Oil Bypass System (Large Engines)BMK23 General Use Dual Remote Oil Bypass UnitBMK26 Ford 7.3L PowerStroke Oil Bypass UnitBMK27 GM 6.6L Dual Remote Bypass SystemBMK28 Ford 6.7L Engine Dual Remote By-Pass Filter KitBMK30 Heavy-Duty By-Pass System (Large Engines)BMK31 Ford 6.0/6.4L Single-Remote Bypass SystemBMK32 GM 6.6L Single-Remote Bypass SystemBMK33 Ford 6.7L Single-Remote Bypass SystemBMK34 Cummins 5.0/5.9/6.7L Bypass System
By-Pass Filter Elements Oil AnalysisAmsoil PowerCore™ Air Filters (PCF)Available Substitute Filter BrandsDonaldson Oil & Air Filters
Donaldson Blue Heavy Duty Air FiltersDonaldson Blue Oil FiltersDonaldson P-Series Heavy Duty Air FiltersDonaldson P-Series Oil & Air Filters
MANN-FILTER Oil, Air, Fuel & CabinWIX Oil, Air, Fuel, Cabin Filters & More
ATF & Gear Lube
Transmission FluidsAutomatic Transmission Fluids
20W-50 Hydrostatic Transmission Fluid (AHF)CG-Tractor Hydraulic/Transmission Oil (TCGSB)OE Multi-Vehicle Synthetic ATFOE Series Fuel-Efficient Synthetic ATFSignature Series Fuel-Efficient Synthetic ATFSignature Series Multi-Vehicle Synthetic ATFSignature Series ULV Synthetic ATFTorque-Drive Transmission Fluid (ATD)Tractor Hydraulic/Transmission Oil (ATH)
100% Synthetic CVT Fluid100% Synthetic DCT FluidManual Transmission Fluids
5W 30 Manual Synchromesh Transmission Fluid (MTF)75W-90 (GL-4) Synthetic Gear Lube (MTG)SAE 50 Long-Life Synthetic Transmission Oil (FTF)
ATV & UTV Drive Train Fluids
Synthetic ATV/UTV Powertrain FluidATV/UTV Transmission & Differential Fluid
Motorcycle Transmission Fluids
Synthetic Dirt Bike Transmission Fluid (DBTF)V-Twin Synthetic Primary Fluid (MVP)V-Twin Synthetic Transmission Fluid (MVT)
Gear LubeHigh Performance Gear Lube
75W 85 Severe Gear® Extreme Pressure (SVL)75W 90 Severe Gear® Extreme Pressure (SVG)75W-110 Severe Gear® Extreme Pressure (SVT)75W-140 Severe Gear® Extreme Pressure (SVO) 75W-90 (GL-4) Synthetic Gear Lube (MTG)AMSOIL Hand Pump For BottlesAMSOIL Marine Gear Lube PumpSEVERE GEAR 80W-90 (AGL)
Semi Truck Gear Lube
75W-90 Semi-Truck Gear Lube (FGR)80W-140 Semi-Truck Gear Lube (FGO)SAE 50 Long-Life Synthetic Transmission Oil (FTF)
Racing & Off Road Gear Lube
SAE 250 Severe Gear Racing Gear Lubricant (SRT)Super Shift Racing Transmission Fluid (ART)
Marine Gear Lube 75W/80W-90 (AGM)Gear Lube AdditiveLimited Slip Differential (LSD) Additive Powershift Transmission FluidPowershift Transmission Fluids
Powershift Transmission Fluid SAE 10W (CTG)Powershift Transmission Fluid SAE 30 (CTJ)Powershift Transmission Fluid SAE 50 (CTL)
ATF for Racing, Ford Type F & Allison C-4Super Shift Racing Transmission Fluid
Miscellaneous
Grease
100% SYNTHETIC EP NLGI 00 GREASE (GSF)Deluxe Grease Gun KitDOMINATOR Synthetic Racing Grease (GRG)Lithium Complex High Viscosity Grease (GVC)Polymeric Off-Road Grease (GPOR1)Polymeric Off-Road Grease (GPOR2)Polymeric Truck, Chassis & Equipment (GPTR1)Polymeric Truck, Chassis & Equipment (GPTR2)Synthetic Multi-Purpose Grease NLGI #2 (GLC)Synthetic Water Resistant Grease NLGI#2 (GWR)X-Treme Food Grade Grease (GXC)
Engine Flush & Degreaser
Engine and Transmission Flush (FLSH)Engine Degreaser (AED)Exterior Ceramic Spray (CSF)Glass Cleaner (AGC)Heavy Duty Degreaser (ADG) High-Foam Car Shampoo (HFB)Interior Detailer Light Lemon (IDL)Interior Detailer Scent Free (IDN)Miracle Wash (AMW) Mudslinger® (AMS)Power Foam Engine Cleaner & Degreaser (APF)
Spray Lubricants
Chain Lube (ACLSC)Engine Fogging Oil (FOG) MP Heavy Duty Metal Protector (AMH)MP Metal Protector (AMP)Silicone Spray (ALS) Spray Grease (GSP)
Bar & Chain Oil
Semi-Synthetic Bar and Chain Oil (ABC)Synthetic Chain Case & Gear Oil (TCC)
Suspension & Fork Oil
Suspension Fluid #10 Medium (STM)Suspension Fluid #5 Light (STL)
Power Steering FluidDOT Brake Fluid
DOMINATOR DOT 4 Brake Fluid (BFR)DOT 3 and 4 Synthetic Brake Fluid (BFLV)
Antifreeze & Coolant
Antifreeze and Engine Coolant (ANT)Dominator Coolant Boost (RDCB)Heavy-Duty Antifreeze & Coolant (ANTHD)Passenger Vehicle Antifreeze (ANTPC)Powersports Coolant (PSAF)
Air Tool Oil
Synthetic Air Tool Oil (AIR)
Firearm Protectants
Brake and Parts Cleaner (BPC)Firearm Cleaner and Protectant (FCP)Firearm Lubricant and Protectant (FLP)
Industrial Lubricants
Compressor Oils - SyntheticPC Series Compressor Oils Synthetic Compressor OilsSynthetic Compressor OilsDC Series Compressor Oils Sirocco SE Series Ester Compressor OilHydraulic Oils - SyntheticAW Series Antiwear Hydraulic OilsBiodegradable Hydraulic OilSlideway, Chain, Bearing and Gear OilSG SERIES Extreme Pressure Gear OilsHydraulic Oils - SyntheticHV Series Hydraulic OilsWL SERIES Slideway, Chain and Gear LubeRC Series R&O/AW Gear And Bearing OilsHT Series High Temperature Lubricating Oils
Fuel Additive
Gasoline Fuel AdditivesP.I. Performance Improver (API)Upper Cylinder Lubricant (UCL)Dominator Octane Boost (AOB)Gasoline Stabilizer for Storage (AST)Motorcycle Octane BoostMotorcycle Octane Boost (MOB)Small Engines & PowersportsSmall Engines Fuel Treatment & StabilizerDiesel Fuel AdditivesDiesel Injector Clean (ADF)Diesel All-In-One (ADB)Diesel Injector Clean + Cetane Boost (ADS)Diesel Cold Flow Improver (ADD)Cetane Boost for Diesel Fuel (ACB)Diesel Recovery Emergency Fuel Treatment
Receive AMSOIL's Confidential Factory Direct Wholesale Price List in your email.
Enter your first name & email address and click on "eMail Price List" button!
AMSOIL Online Store
AMSOIL Preferred Customer Program. Save upto 25%!
Wholesale Business Accounts
Become an AMSOIL Dealer!
Request FREE AMSOIL Catalog
Questions? Please Contact us
Order AMSOIL By Phone
AMSOIL Online Store
Order AMSOIL By Fax
VISA and MASTERCARD is accepted for US and Canada.
Discover and American Express is accepted for US customers only
Go to Top

Select your country.

Canada
Ships from Canada. Prices in CA dollars.
United States
Ships from USA. Prices in US dollars.

Please Wait...

Your request is being processed...