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Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world’s best motor oil. The result: engine protection that blows the doors off the highest industry standards.

See the Product Data Bulletin for full details.

Fights Engine Wear

  • 75 percent more engine protection against horsepower loss and wear1 than required by the industry standard, extending the life of vital components like pistons and cams.
  • Develops a strong fluid film that keeps metal surfaces separated.
  • Robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life.

1Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.


Signature Series Improves Startup Protection

AMSOIL provides better cold cranking viscosity, helping improve wear protection for engine components at startup.PP

ASTM D5293 cold Crank (Lower = Better)

ASTM D5293 Cold Crank (Lower=Better)

  AMSOIL Signature Series(5W-30) Royal Purple High Performance (5W-30) Lucas (5W-30) Driven LS30 (5W-30) Red Line High Performance (5W-30) Royal Purple HPS (5W-30)
Cranking Viscosity (㎫ ●s) 3800 4500 5000 5750 6100 6100

PPBased on independent third-party testing in the industry-standard ASTM D5293 Cold Crank Simulator test as required by SAE J300.
*Trademark names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.


Signature Series Fights Wear

75% more engine protection against horsepower loss and wear.A

Sequence IVA Engine Test - Lower Number = Less Wear

Sequence IVA Engine Test - Lower Number = Less Wear

  Industry Standard AMSOIL Signature Series 0W-20 Synthetic Motor Oil
Average Cam Wear 90 20.28

ABased on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.


Signature Series Delivers Powerful Protection

AMSOIL delivers powerful protection. How good is it? An independent lab compared AMSOIL synthetic motor oil head-to-head against a leading competitor in a 100,000-mile test.P AMSOIL provided far superior wear protection and kept bearings looking like new.

Signature Series Delivers Powerful Protection – AMSOIL delivers powerful protection.  How good is it?  An independent lab compared AMSOIL synthetic motor oil head-t-head against a leading competitor in a 100,000-mile test.  AMSOIL provided far superior wear protection and kept bearings looking like new.

PTesting conducted in an independent lab using AMSOIL Signature Series 5W-30 Synthetic Motor Oil and a leading synthetic-blend 5W-30 motor oil in Ford F-150 trucks with 3.5L twin-turbo engines.


Signature Series Protects Against LSPI

AMSOIL Synthetic Motor Oils achieved 100% protection against LSPI.B

Signature Series protects Against LSPI – AMSOIL Synthetic Motor oil achieved 100% protection against LSPI.

Example of piston damage due to an LSPI event observed during the testing of a competitor’s motor oil. The red arrows indicate sections of the ring land that have broken away from the piston.

BBased on zero LSPI events in five consecutive tests of AMSOIL Signature Series, XL and OE 5W-30 Motor Oil in the LSPI engine test required by the GM dexos1 Gen 2 specification.


Signature Series Resists Viscosity Increase

Signature Series is barely challenged by the industry-standard testing, demonstrating only a 0.1% viscosity increase. Even when the test length is doubled, AMSOIL delivered twice the viscosity control required by the standard.GG

Sequence IIIH Engine Test - Lower number = better viscosity control

Sequence IIIH Engine Test - Lower number = better viscosity control

  Industry Standard AMSOIL 1X AMSOIL 2X
Viscotiy Increase % 100% 0.1% 49.6%

GGBased on independent testing of AMSOIL Signature Series 5W-30 in the Sequence IIIH Engine Test (ASTM D8111), required by the ILSAC GF-6 and API SP specifications.


Signature Series Helps Keep Engines Cleaner

  • Fortified with a heavy treatment of detergent additives, delivering 28% more acid-neutralizing power than Mobil 1* and helping engines stay cleaner, longer.LL
  • 50% more detergentsD to help keep oil passages clean and promote oil circulation.
  • Controls heat and minimizes performance-robbing deposits.
  • Superior thermal durability that resists breakdown and keeps pistons clean.
  • Provides 90% better protection against sludge.DD
Screenshot of oil pick-up tube screen showing it's virtually free of sludge.

The oil pick-up tube screen is virtually free of sludge.

LLBased upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896. Oils purchased July 2020.
Dvs. AMSOIL OE Motor Oil
DDBased on independent testing of AMSOIL Signature Series 5W-30 in the ASTM D6593 engine test for oil screen plugging as required by the API SN specification.


Signature Series Guards Turbos

Protects turbochargers 72% better than requiredC by the GM dexos1* Gen 2 specification.

Screenshot of part from turbocharger.

CBased on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.


Keeps Pistons Cleaner

Even after doubling the length of the industry-standard test, AMSOIL delivered 40% cleaner pistons than required by the standard.FF

Screenshot of piston 40% cleaner from using AMSOIL.

FFBased on independent testing of AMSOIL Signature Series 5W-30 in the Sequence IIIH Engine Test (ASTM D8111), required by the ILSAC GF-6 and API SP specifications.


Trusted by Professionals

Dedicated engine builders and mechanics put in long hours honing their craft. These architects of powerful, high-performance engines turn to Signature Series to protect their passion.

Hear what they have to say.

 


 


AMSOIL Safety Data Sheets (SDS)

Contact [email protected] if you're looking for a specific SDS that is not available on this page.

PRODUCT CODE - NAME SDS
ABC - Semi- Synthetic Bar & Chain Oil
ACB - Diesel Cetane Boost
ACLSC - Chain Lube - Aerosol
ADA – Slip Lock® Limited-Slip Additive
ADB – Diesel All-In-One
ADD – Diesel Cold Flow
ADF - Diesel Injector Clean
ADG - Heavy-Duty Degreaser
ADO - SAE 5W-40 Synthetic Heavy-Duty Diesel Oil
ADN - SAE 10W-30 Synthetic Heavy-Duty Diesel Oil
ADP - SAE 15W-40 Synthetic Heavy-Duty Diesel Oil
ADSP - Diesel Injector Clean + Cetane Boost
AED – Engine Degreaser
AEL - European Car Formula SAE 5W-30 Improved ESP Synthetic Motor Oil
AES - AMSOIL 5W-30 Small Engine Oil
AFF - Formula 4-Stroke® SAE 0W-40 Synthetic Power Sports Oil
AFL - European Car Formula SAE 5W-40 Improved ESP Synthetic Motor Oil
AGA - Gasoline Additive
AGC – Glass Cleaner
AGL – SEVERE GEAR® 80W-90
AGM - SAE 75W-90 Synthetic Marine Gear Lube
AHF - SAE 20W-50 Synthetic Zero-Turn Hydrostatic Transmission Fluid
AIO - Injector Oil
AIR - Synthetic Air Tool Oil
ALM - Signature Series SAE 5W-20 Synthetic Motor Oil
ALS - Silicone Spray
AME - SAE 15W-40 Heavy Duty Synthetic Diesel & Marine Oil
AMH - Heavy-Duty Metal Protector
AMO - Premium Protection SAE 10W-40 Synthetic Motor Oil
AMP, CMP - Metal Protector
AMR - Signature Series SAE 5W-50 Synthetic Motor Oil
AMS– Mudslinger®
AMW- Miracle Wash® Waterless Wash & Wax
ANGS - SAE 20W-40 Synthetic Stationary Natural Gas Engine Oil
ANGV - SAE 15W-40 Synthetic Vehicular Natural Gas Engine Oil
ANT - Propylene Glycol Antifreeze & Coolant
ANTPC - AMSOIL Passenger-Car & Light-Truck Antifreeze & Coolant
ANTHD - AMSOIL Heavy-Duty Antifreeze/Coolant
AOB/COB - DOMINATOR® Octane Boost
APF - Power Foam
API - P.i. Performance Improver Gasoline Additive
AQS - Quickshot
ARO - Premium Protection SAE 20W-50 Synthetic Motor Oil
ART – Super Shift® Racing Transmission Fluid
ASE - AMSOIL SAE 10W-30 Small-Engine Oil
ASF - AMSOIL SAE 10W-40 Small-Engine Oil
ASL - Signature Series SAE 5W-30 Synthetic Motor Oil
ASM - Signature Series 0W-20 Synthetic Motor Oil
ASO - Formula 4-Stroke® SAE 10W-40 Synthetic Scooter Oil
AST - Gasoline Stabilizer
ATD - Torque-Drive® Synthetic Automatic Transmission Fluid
ATF - Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid
ATH - SAE 5W-30 Synthetic Tractor Hydraulic/Transmission Oil
ATL - Signature Series Fuel-Efficient Synthetic Automatic Transmission Fluid
ATM - Signature Series SAE 10W-30 Synthetic Motor Oil
AUDT - Synthetic ATV/UTV Transmission & Differential Fluid
AUPT - Synthetic ATV/UTV Powertrain Fluid
AUV40 - SAE 10W-40 Synthetic ATV/UTV Motor Oil
AUV50 - SAE 5W-50 Synthetic ATV/UTV Motor Oil
AWG – ISO-22 Synthetic Anti-Wear Hydraulic Oil
AWH – ISO-32 Synthetic Anti-Wear Hydraulic Oil
AWI – ISO-46 Synthetic Anti-Wear Hydraulic Oil
AZF - Signature Series SAE 0W-40 Synthetic Motor Oil
AZO - Signature Series SAE 0W-30 Synthetic Motor Oil
BFLV - DOT 3 and DOT 4 Synthetic Brake Fluid
BFR - DOMINATOR® DOT 4 Synthetic Racing Brake Fluid
BHO – Synthetic Biodegradable Hydraulic Oil
BPC - Brake Parts Cleaner
BRK - Break-in Oil SAE 30
CTG - SAE 10W Synthetic Powershift Transmission Fluid
CTJ - SAE 30 Synthetic Powershift Transmission Fluid
CTL - SAE 50 Synthetic Powershift Transmission Fluid
CVT - Synthetic CVT Fluid
DB40 - SAE 10W-40 Dirt Bike Oil
DB50 - SAE 10W-50 Dirt Bike Oil
DB60 - SAE 10W-60 Dirt Bike Oil
DBTF - SAE 80 Synthetic Dirt Bike Transmission Fluid
DCK – ISO-100 Synthetic Diester Compressor Oil
DCL – ISO-150 Synthetic Diester Compressor Oil
DCO - 20W-50 DOMINATOR® Competition Diesel Oil
DCT - Synthetic Dual-Clutch Transmission Fluid
DEO - SAE 5W-40 Signature Series Max-Duty Synthetic Diesel Oil
DHD - SAE 5W-30 Signature Series Max-Duty Synthetic Diesel Oil
DME - SAE 15W-40 Signature Series Max-Duty Synthetic Diesel Oil
DRC - Diesel Recovery
DTT - SAE 10W-30 Signature Series Max-Duty Synthetic Diesel Oil
DZF - SAE 0W-40 Signature Series Max-Duty Synthetic Diesel Oil
EAL - Engine Assembly Lube
EFM - European Car Formula SAE 5W-40 Classic ESP Synthetic Motor Oil
EFO - European Car Formula SAE 0W-40 Classic ESP Synthetic Motor Oil
FCPCN - AMSOIL Firearm Cleaner and Protectant
FCPSC - AMSOIL Firearm Cleaner and Protectant (aerosol)
FGO - SAE 80W-140 Synthetic Gear Lube
FGR - SAE 75W-90 Synthetic Gear Lube
FLP - Synthetic Firearm Lubricant
FLPSC - Synthetic Firearm Lubricant (aerosol)
FLSH - Engine and Transmission Flush
FOGSC - Engine Fogging Oil
FTF - SAE 50 Long-Life Synthetic Transmission Oil
GBS - Briggs & Stratton 4T Racing Oil
GLC - Synthetic Multi-Purpose Grease
GPOR1 - Synthetic Polymeric Off-Road Grease, NLGI #1
GPOR2 - Synthetic Polymeric Off-Road Grease, NLGI #2
GPTR1 - Synthetic Polymeric EP Grease NLGI #1
GPTR2 - Synthetic Polymeric EP Grease NLGI #2
GRG - DOMINATOR® Synthetic Racing Grease
GSF - Semi-Fluid Synthetic EP Grease
GSPSC - Spray Grease
GVC - High-Viscosity Lithium-Complex Synthetic Grease
GWR - Synthetic Water-Resistant Grease
GXC - X-Treme Synthetic Food-Grade Grease
HDD - SAE 5W-30 Series 3000 Synthetic Heavy-Duty Diesel Oil
HVG – ISO-22 Synthetic Multi-Viscosity Hydraulic Oil
HVH – ISO-32 Synthetic Multi-Viscosity Hydraulic Oil
HVI – ISO-46 Synthetic Multi-Viscosity Hydraulic Oil
HVJ – ISO-68 Synthetic Multi-Viscosity Hydraulic Oil
MC3 - 4T Performance SAE 10W-30 Synthetic 4-Stroke Motorcycle Oil, (International Only)
MC4 - 4T Performance SAE 10W-40 Synthetic 4-Stroke Motorcycle Oil, (International Only)
MC5 - 4T Performance SAE 20W-50 Synthetic 4-Stroke Motorcycle Oil, (International Only)
MCF - SAE 10W-40 Synthetic Metric Motorcycle Oil
MCS - SAE 60 Synthetic V-Twin Motorcycle Oil
MCT - SAE 10W-30 Synthetic Metric Motorcycle Oil
MCV - SAE 20W-50 Synthetic V-Twin Motorcycle Oil
MFF - SAE 15W-50 Synthetic Metric Motorcycle Oil
MOB – Motorcycle Octane Boost
MTF – Synthetic Manual Synchromesh Transmission Fluid
MTG - Synthetic Manual Transmission and Transaxle Gear Lube
MVI - SAE 20W-40 Synthetic V-Twin Motorcycle Oil
MVP - Synthetic V-Twin Primary Fluid
MVT - Synthetic Motorcycle V-Twin Transmission Fluid
OEB - OE SAE 5W-40 Synthetic Motor Oil (International Only)
OEF - OE SAE 5W-30 Synthetic Motor Oil
OEM - OE SAE 5W-20 Synthetic Motor Oil
OER - OE SAE 20W-50 Synthetic Motor Oil (International Only)
OES - OE SAE 0W-16 Synthetic Motor Oil
OET - OE SAE 10W-30 Synthetic Motor Oil
OEZ - OE SAE 0W-20 Synthetic Motor Oil
OTF - OE Multi-Vehicle Synthetic Automatic Transmission Fluid
OTL - OE Fuel-Efficient Synthetic Automatic Transmission Fluid
P300 – Extreme Power SAE 0W-30 Synthetic Motor Oil (International Only)
P400 – Extreme Power SAE 0W-40 Synthetic Motor Oil (International Only)
PCH – ISO-32 Synthetic Compressor Oil
PCI – ISO-46 Synthetic Compressor Oil
PCJ – ISO-68 Synthetic Compressor Oil
PCK – ISO-100 Synthetic Compressor Oil
PSF - Synthetic Power Steering Fluid
RCH - ISO-32 Synthetic R&O Gear, Bearing & Compressor Oil
RCI - ISO-46 Synthetic R&O Gear, Bearing & Compressor Oil
RCJ - IS0-68 Synthetic R&O Gear, Bearing & Compressor Oil
RCK - IS0-100 Synthetic R&O Gear, Bearing & Compressor Oil
RCL - ISO-150 Synthetic R&O, AW Gear & Bearing Oil
RCM - ISO-220 Synthetic R&O, AW Gear & Bearing Oil
RCN – ISO-320 Synthetic R&O Gear, Bearing & Compressor Oil
RCO – ISO-460 Synthetic R&O Gear, Bearing & Compressor Oil
RCP – ISO-680 Synthetic R&O Gear, Bearing & Compressor Oil
RD20 - DOMINATOR® SAE 5W-20 Synthetic Racing Oil
RD30 - DOMINATOR® SAE 10W-30 Synthetic Racing Oil
RD50 - DOMINATOR® SAE 15W-50 Synthetic Racing Oil
RD60 - DOMINATOR® SAE 60 Synthetic Racing Oil
RDCB - DOMINATOR® Coolant Boost
SEI - SIROCCO ISO-32/46 Synthetic Compressor Oil
SGJ - ISO-68 Synthetic Extreme-Pressure Gear Oil
SGK - ISO-100 Synthetic Extreme-Pressure Gear Oil
SGL - ISO-150 Synthetic Extreme-Pressure Gear Oil
SGM - ISO-220 Synthetic Extreme-Pressure Gear Oil
SGN - ISO-320 Synthetic Extreme-Pressure Gear Oil
SGO - ISO-460 Synthetic Extreme-Pressure Gear Oil
SGP - ISO-680 Synthetic Extreme-Pressure Gear Oil
SRN – SEVERE GEAR® SAE 190 Extreme Pressure Synthetic Racing Gear Lubricant
SRT – SEVERE GEAR® SAE 250 Extreme-Pressure Synthetic Racing Gear Lubricant
STL - Shock Therapy® Light #5 Synthetic Suspension Fluid
STM - Shock Therapy® Medium #10 Synthetic Suspension Fluid
SVG – SEVERE GEAR® SAE 75W-90 Synthetic Gear Lube
SVT – SEVERE GEAR® SAE 75W-110 Synthetic Gear Lube
SVO – SEVERE GEAR® SAE 75W-140 Synthetic Gear Lube
TCC - Synthetic Chaincase & Gear Oil
TDR - DOMINATOR® Synthetic 2-Stroke Racing Oil
WCF - SAE 10W-40 Synthetic Marine Oil
WCM - SAE 25W-40 Synthetic-Blend Marine Oil
WCT - SAE 10W-30 Synthetic Marine Oil
XLF - XL SAE 5W-30 Synthetic Motor Oil
XLM - XL SAE 5W-20 Synthetic Motor Oil
XLO - XL SAE 10W-40 Synthetic Motor Oil
XLT - XL SAE 10W-30 Synthetic Motor Oil
XLZ - XL SAE 0W-20 Synthetic Motor Oil
ZRD – AMSOIL Z-ROD® 10W-40 Synthetic Motor Oil
ZRF – AMSOIL Z-ROD® 10W-30 Synthetic Motor Oil
ZRT – AMSOIL Z-ROD® 20W-50 Synthetic Motor Oil