AMSOIL Performance Test

CVT Fluid

AMSOIL delivers outstanding protection in severe service.

AMSOIL CVT Fluid was installed in four Las Vegas taxis, each driven 100,000 miles. As shown in the belt photos below, AMSOIL CVT Fluid delivered outstanding protection in severe-service conditions.

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)

AMSOIL Signature Series Motor Oil SAE 5W-30

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 Helps Keep Engines Cleaner, Longer

AMSOIL Signature Series is fortified with a heavy treatment of detergent additives, delivering 28 percent more acid-neutralizing power than Mobil 1^* and helping engines stay cleaner, longer.^LL

^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.
*All Trademarked 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 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.

^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 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 Protects Against LSPI

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

Below is an 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 Guards Turbos

Protects turbochargers 72% better than required^C by the GM dexos1^* Gen 2 specification.

Signature Series controlled heat and minimized performance-robbing deposits on the turbo-bearing and shaft surfaces.

^CBased on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
^*All trademarked 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 Cleans

AMSOIL Signature Series Synthetic Motor Oil has 50% more detergents^D to help keep oil passages clean and promote oil circulation. It provides 90% better protection against sludge^DD.

^Dvs. AMSOIL OE Motor Oil
^DD Based 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 Resists Viscosity Increase

AMSOIL 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)

	Industry Standard	AMSOIL Standard Length	AMSOIL Double Length
Viscosity 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 Keeps Pistons Cleaner

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

^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.

XL Resists Oil Breakdown.

Provides 64% more protection against oil breakdown^F than required by the GM dexos1^* Gen 2 specification

GM Oxidation and Deposit (GMOD) Test (Lower Number = Better Viscosity Control)

	Maximum Allowable Viscosity Increase	AMSOIL XL Synthetic Motor Oil
% Viscosity Increase	100%	36.3%

^FBased on independent testing of AMSOIL XL 5W-30 motor oil in the GMOD engine test required for the GM dexos1 Gen2 specification.
^*All Trademarked 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.

OE Protects Against Wear

Provides 47% more wear protection.^G

Peugeot TU3M Wear Test (Lower Number = Less Wear)

	Industry-Standard Maximum Allowable Limit	AMSOIL OE 0W-20
Max Cam Wear (µm)	15	8

^GBased on independent testing of OE 0W-20 in the Peugeot TU3M Weat Test as required by the dexos1 Gen 2 specification.

AMSOIL Synthetic Diesel Oil Delivers More Wear Protection

Independent testing shows our Heavy-Duty Synthetic Diesel Oil delivers 4X more protection against wear than required by Detroit Diesel's^* standard^I. For even greater protection, Signature Series Max-Duty Synthetic Diesel Oil provides 6X more wear protection than required by the standard^II.

^IBased on independent testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation.
^IIBased on independent testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation.
^*All trademarked 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.

DOMINATOR^® Protects Better

DOMINATOR^® Competition Diesel Oil delivers 50% more film thickness^Q to withstand high cylinder pressures and protect against wear.

AMSOIL DOMINATOR® Competition Diesel Oil SAE 20W-50

High-Temperature/High-Shear (HTHS) Viscosity (Higher = Better Wear Protection)

	AMSOIL DOMINATOR® 20W-50 Diesel Oil	15W-40 Diesel Oil
Viscosity, cP	5.5	3.5

^QCompared to the 3.5 cP HTHS limit for SAE 15W-40.

Synthetic Diesel Oil Reduces Oil Consumption

Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption, while Signature Series Max-Duty Synthetic Diesel Oil provides up to 76% less oil consumption.^L

Oil Consumption (Lower = Better)

	CK-4 Limit	AMSOIL Heavy-Duty	AMSOIL Signature-Series
g/kwh	0.5	0.17	0.12

^LThan required by the API CK-4 standard in the Caterpillar-1N oil consumption test.

Signature Series Keeps Turbos Clean

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil provides protection boosted to the max, delivering up to 60% better turbo cleanliness^J and withstanding the extra demands you place on the turbo when pulling heavy loads or updating the tune for maximum horsepower.

^JBased on specification standards of CAT C13 2nd Ring Top Land Carbon testing.

Signature Series Protects Against Rust

Provides up to 2X better rust protection.^K

Test results describe and represent properties of oils that were acquired on the dates listed in Table 1 (see www.amsoil.com/rusttest.aspx). Results do not apply to any subsequent reformulations of such oils or to new oils introduced after completion of testing. All oils were available to consumers at the time of purchase. Testing was completed in November 2017.

NMMA FC-W Rust Test (Lower Number = Less Wear)

	AMSOIL Signature Series 15W-40	Lucas* 15W-40	Schaeffers* Durability Advantage 15W-40	Shell* Rotella T4 15W-40	Mobil* Delvac 1300 Super 15W-40	Reference oil (pass/fail limit)
Max Cam Wear (µm)	17.25	33.63	39.5	30.63	36.69	30.75

^KBased on industry standard testing using the NMMA FC-W Rust Test.
^*All trademarked 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

AMSOIL delivers powerful engine protection. How good is it? In independent testing compared to a leading brand, AMSOIL provided long-lasting wear protection, keeping cylinder linders looking like new.^DD

^DDBased on independent testing of AMSOIL 5W-30 Signature Series Max-Duty Synthetic Diesel Oil and a leading conventional 15-40 diesel oil using the Detroit Diesel* DD13 Scuffing Test for specification DFS 93K222.
^*All trademarked 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 Excels in Extreme Cold

AMSOIL 0W-40 Signature Series Max-Duty Synthetic Diesel Oil delivers 4X better cold-temperature performance when compared to SAE 15W-40 oil in ASTM D5293 Cold Cranking Viscosity Test.

AMSOIL Resists Viscosity Breakdown

AMSOIL resists viscosity breakdown 6X better than Harley-Davidson^* SYN3^* for improved protection against compensator and transmission gear wear.^BB

Viscosity Breakdown (Less Viscosity Loss = Better Protection)

	AMSOIL Synthetic V-Twin Motorcyle Oil	Harley-Davidson Screamin' Eagle SYN3
% Viscosity Loss in the CEC L45-KRL, ASTM D445 Test	-3.48	-25.32

^BBBased on testing of AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil purchased on 3/19/19 and Harley-Davison Screamin' Eagle SYN3 purchased on 3/19/19 in the CEC L45-KRL, ASTM D445 test.
^*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express of implied, is made by their use.

AMSOIL Delivers Superior Rust Protection

In industry-standard testing, AMSOIL Z-ROD® completely prevented rust formation while a leading competitor did not.^JJ

^JJBased upon in-house testing of AMSOIL Z-ROD 10W-40 and a leading competitor obtained on 7/25/2019 in ASTM D1748-10.
AMSOIL Fights Water Contamination

AMSOIL Synthetic Marine Gear Lube delivers advanced outboard protection against power loss and gear wear, even with up to 15 percent water contamination.^V

^VBased upon AMSOIL testing of AMSOIL Synthetic Marine Gear Lube 75W-90 in ASTM 3233 and ASTM D892.

SABER Professional Fights Carbon

Equipment using SABER Professional was 96% carbon-free ^N.

^NBased on spark-arrestor testing.
AMSOIL Delivers Confident Clutch Feel

AMSOIL provides excellent clutch protection^T. How good is it? In extreme simulated-start testing, AMSOIL provided superior wear protection and kept clutch plates looking new.

^TBased on dyno testing of a Honda^* CRF450 dirt bike using AMSOIL 10W-40 Synthetic Dirt Bike Oil and leading original equipment manufacturer 10W-40 conventional dirt bike oil.
^*All trademarked 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.

INTERCEPTOR Fights Wear and Deposits

AMSOIL INTERCEPTOR® Synthetic 2-Stroke Oil delivered outstanding wear protection and cleanliness in a rental sled throughout 1,617 miles (2,602 km) of abuse.^CC

^CCBased upon use of a new 2019 Polaris^* RMK^* 850 as a rental sled at Grizzly Lodge December 2018 - February 2019.
^*All trademarked 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.
99% Efficiency at 20 Microns

Filtering particles >20 microns fights engine wear.^AA

^AAIn accordance with industry-standard ISO SO 4548-12.

Preserves Horsepower and Performance

AMSOIL delivers 18 percent more lubricity than Lucas* and 20 percent more than Sea Foam* for better retention of horsepower and fuel economy.^R

Lubricity Performance (Measured by Wear Scar in Modified ASTM D6079, Smaller Number = Better Lubricity)

	Base Fuel (E10)	Lucas	Sea Foam	AMSOIL
Average Wear Scar (µm)	807 µm	786 µm	803 µm	640 µm

^RBased on independent testing of AMSOIL Upper Cylinder Lubricant, Lucas Upper Cylinder Libricant and Sea Foam Motor Treatment obtaind on 02/13/2019 using the ASTM D6079 modified for use with gasoline.
^*All trademarked 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.

P.i. Increases Horsepower

AMSOIL P.i.® restores up to 14% horsepower.^NN

Horsepower Comparison

	Pre-Cleaning Power	Post-Cleaning Power
Horsepower	248.9	283.8

^NNBased on third-party testing in a 2016 Chevrolet^* Silverado^*1500, 5.3L V-8 GDI with 100,616 miles, using one tank treated with AMSOIL P.i. Actual results may vary.
^*All trademarked 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.

AMSOIL Improves Lubricity

Testing reveals AMSOIL Diesel All-in-One provides significant lubricity improvement in diesel fuels found across the U.S., delivering improved wear protection.^OO

Lubricity Improvement (The lower the number, the better)

ASTM D6079 Wear Scar Diameter Average um	Illinois	Delaware	Colorado	Washington	Tennessee	Texas	Pennsylvania	North Dakota	Wyoming
Fuel Treated with AMSOIL Diesel All-In-One	381	392	389	327	350	363	355	397	349
Baseline Fuel	484	551	530	535	536	520	540	512	509

Note: D975 industry diesel fuel standard requires fuel to be 520 or less EMA and Canada would like that to be 460 or less

^OOFuels tested in 2017.

AMSOIL Fights Corrosion

AMSOIL provides corrosion protection Sea Foam^* Motor Treatment can't match, helping maintain power and performance and keeping metal looking like new even when subjected to salt water.^X

^*Based upon independent testing of AMSOIL Gasoline Stabilizer obtained Nob. 8, 2018 and Sea Foam Motor Treatment purchased Oct. 25, 2018 in a modified NACE TM0172 using synthetic sea water per ASTM D665 part B.
^*All trademarked 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.

AMSOIL Improves Stability

AMSOIL provides fuel stability that Sea Foam^* Motor Treatment can't match, helping maintain startability and protect against the formation of varnish and gum.^Z

Fuel Stability in the 24-Hour (1,440-minute) ASTM D525 Test

	Base Fuel	Sea Foam Motor Treatment®	AMSOIL Gasoline Stabilizer
Minutes	745	685	1440

^ZBased on independent testing of AMSOIL Gasoline Stabilizer obtained Nov. 8, 2018 and Sea Foam Motor Treatment purchased Oct. 25, 2018 in the ASTM D525 using test fuel containing no oxidation-stability improving additives.
^*All trademarked 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.

AMSOIL Resists Corrosion

In independent, industry-standard testing, cast-iron and copper plates protected by AMSOIL showed virtually no signs of corrosion.^HH

^HHBased on results of the ASTM D2570 corrosion test.

AMSOIL Resists Cavitation

In independent, industry-standard testing, cylinder liners protected by AMSOIL showed virtually no signs of cavitation.^II

^IIBased on results of the ASTM D7583 cavitation test.
Delivers Outstanding Efficiency

Fine-particle filtration down to 2 microns.

ECHO 100:1 String Trimmer Technical Study (G3470)

AMSOIL SABER^® Professional Synthetic 2-Stroke Oil mixed at 100:1 resisted deposits and maintained power better than ECHO Power Blend XTended Life Universal 2-Stroke Oil mixed at 50:1.
A Study of LUCAS Semi-Synthetic 2-Cycle Oil in ECHO* String Trimmers (G3466)

AMSOIL SABER^® Professional Synthetic 2-Stroke Oil mixed at 50:1 provided improved resistance to performance-robbing deposits and power loss compared to LUCAS Semi-Synthetic 2-Cycle Oil in ECHO string trimmers.

Redmax 100:1 Trimmer Technical Study (G3522)

AMSOIL SABER^® Professional Synthetic 2-Stroke Oil mixed at 100:1 resisted deposits better than RedMax* 2-Stroke Engine Oil mixed at 50:1.
3,469-Mile Case Study in Rotax E-TEC Engine (G3038) (1.1 MB PDF)

AMSOIL submitted the pistons from a Ski-Doo Rotax E-TEC 800R engine to an ASTM-calibrated rater following 3,469 miles of aggressive trail riding to reveal that AMSOIL INTERCEPTOR^® Synthetic 2-Stroke Oil provided outstanding protection and prevented piston skirt scuffing and ring sticking.

ECHO String Trimmer Technical Study (G3455)

AMSOIL SABER^® Professional Synthetic 2-Stroke Oil resisted performance-robbing deposits and maintained power and performance in ECHO string trimmers.

View More In The Performance Test Archive

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