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AMSOIL was founded on innovation, beginning with our introduction of the world's irst API-qualiied synthetic motor oil. By ignoring commonly accepted limitations and refusing to stop short of success, we set a new benchmark for lubricant performance. These same principles continue to guide our product development, resulting in Signature Series Synthetic Motor Oil. Signature Series is not only the best oil we have ever made, it’s also better than any competitor oil we have tested. Some may claim that Signature Series is over-engineered. Perfect. It’s not for everyone. It’s for those who want the absolute best engine protection — and it delivers.
Signature Series Synthetic Motor Oil develops a strong fluid ilm that keeps metal surfaces separated. Its robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life. The Sequence IVA Engine Test, which must be passed to meet the API SN PLUS speciication, simulates extended periods of stop-and-go driving. For 100 hours, the test engine cycles between 50 minutes of idling and 10 minutes of elevated rpm — conditions that encourage engine wear. The camshaft is then measured for wear in 84 locations and an average score is determined.
We used Signature Series 0W-20, the lightest viscosity in the line, to further increase the severity of the test. AMSOIL Signature Series Synthetic Motor Oil provided 75% more engine protection against horsepower loss and wear1 than required by the industry standard, extending the life of vital components like pistons and cams.
Some may claim that Signature Series is over-engineered. Perfect. It’s not for everyone. It’s for those who want the absolute best engine protection — and it delivers.
We armed Signature Series with an advanced detergent system that protects against harmful deposits and low speed pre-ignition (LSPI). Most new engines feature gasoline direct injection (GDI), often combined with a turbocharger to boost power and improve fuel economy. These new technologies, when combined with a poorly formulated motor oil, promote LSPI and threaten engine operation. LSPI is the spontaneous ignition of the fuel/air mixture prior to spark-triggered ignition. It occurs in today’s advanced engines and is much more destructive than typical pre-ignition. A properly formulated motor oil is critical for protecting your engine.
Original equipment manufacturers (OEMs) like GM* have addressed the issue by designing tests to determine a motor oil’s ability to prevent LSPI. Signature Series Synthetic Motor Oil achieved 100% protection against LSPI1 in the engine test required by the GM dexos1* Gen 2 speciication - zero occurrences were recorded throughout ive consecutive tests.
Our unique synthetic formulation is inherently stable to resist oxidation and neutralize acids. Signature Series Motor Oil provides outstanding protection against deposits common to high-temperature engine environments. The tremendous heat and stress turbos create can cause some oils to break down and form harmful bearing deposits through a process known as turbo coking. Over time, turbos can suffer reduced performance or fail altogether.
We challenged Signature Series to the GM Turbo Coking Test, which consists of 2,000 cycles of extreme heat soaks. An oil must limit the temperature change within the turbocharger to 13% or less to pass the test. Signature Series limited the temperature increase to only 3.6%, protecting the turbocharger 72% better than required2 by the GM dexos1 Gen 2 speciication.
An independent lab compared AMSOIL synthetic motor oil head-to-head against a leading competitor in a 100,000-mile test. AMSOIL provided far superior wear protection and kept bearings looking like new.
AMSOIL provides better cold cranking viscosity, helping improve wear protection for engine components at startup.
The extreme durability of Signature Series Motor Oil helps your engine run stronger, for longer. We installed Signature Series 5W-30 Synthetic Motor Oil in a Ford* F-150* with a new 3.5L Ecoboost* engine to test its ability to protect turbocharged direct-injection (TDGI) engines from torque and horsepower loss during extended drain intervals up to 25,000 miles (40,200 km). Power sweeps were done at the beginning and end of the test to evaluate horsepower and torque retention. As the graph shows, Signature Series helped maintain engine performance throughout the 100,000-mile (160,934 km) test.
We formulated Signature Series with superior thermal durability that resists breakdown and keeps pistons clean. The Sequence IIIH Test uses the Chrysler* 3.6L Pentastar* engine to evaluate a motor oil’s ability to resist heat and keep pistons clean. The test is conducted with oil temperatures of 304ºF (151ºC), much hotter than normal operation, to accelerate oil thickening and deposits. A single-length 90- hour test didn’t even challenge Signature Series. Its viscosity was like that of new oil, and the pistons were still nearly spotless. To really test the oil, we told the lab to reassemble the engine and run the test again using the same oil. Even after doubling the length of the industry-standard test, the oil limited oil thickening to well under the allowable threshold while delivering 40% cleaner pistons than required by the standard.
AMSOIL Signature Series Synthetic Motor Oil has 50% more detergents3 to help keep oil passages clean and promote oil circulation. Engine failures due to sludge are often caused by a plugged oil pick-up tube screen — the motor is effectively starved of oil. The Sequence VG Engine Test measures an oil’s ability to prevent sludge. During the test, a Ford* 4.6L engine is subjected to sludge-inducing conditions for 216 hours. The industry standard allows for 10% blockage before the motor oil fails the test. Signature Series produced a screen virtually free from sludge (see image). Its detergent and dispersant additives are so effective, Signature Series provides 90% better protection against sludge.
Use AMSOIL Signature Series Synthetic Motor Oil in applications that require any of the following speciications:
10W-30 (ATM): API SP (Resource Conserving), SN PLUS, SN…; ACEA A5/B5, A1/B1; Ford WSS-M2C205-A; Chrysler MS-6395; GM LL-A-025, 6094M, 4718M; ILSAC GF-6A, GF-5, GF-4.
0W-16 (AZS): API SP (Resource Conserving), SN Plus, SN...; ILSAC GF-6B
0W-20 (ASM): API SP (Resource Conserving), SN PLUS, SN…; GM dexos1* Gen 3 (supersedes dexos1 Gen 2 and 6094M); ACEA A1/B1; Ford WSS-M2C947-B1, WSS- M2C947-A, WSS-M2C962-A1; Chrysler MS-6395; ILSAC GF-6A, GF-5, GF-4
5W-20 (ALM): API SP (Resource Conserving), SN PLUS, SN…; GM dexos1* Gen 3 (supersedes dexos1 Gen 2 and 6094M); ACEA A1/B1; Ford WSS-M2C945-B1, WSS- M2C945-A, WSS-M2C930-A, WSS-M2C960-A1; Chrysler MS-6395; ILSAC GF-6A, GF-5, GF-4
0W-30 (AZO): API SP (Resource Conserving), SN PLUS, SN…; GM dexos1* Gen 3 (supersedes dexos1 Gen 2, LL-A-025, 6094M and 4718M); ACEA A5/B5, A1/B1; Ford WSS-M2C963-A1; Chrysler MS-6395; ILSAC GF-6A, GF-5, GF-4
5W-30 (ASL): API SP (Resource Conserving), SN PLUS, SN…; GM dexos1* Gen 3 (supersedes dexos1 Gen 2, LL-A-025, 6094M and 4718M); ACEA A5/B5, A1/B1; Honda HTO-06; Ford WSS-M2C946-B1, WSS-M2C946-A, WSS-M2C929-A, WSS-M2C961-A1; Chrysler MS-6395; ILSAC GF-6A, GF-5, GF-4
10W-30 (ATM): API SP (Resource Conserving), SN PLUS, SN…; ACEA A5/B5, A1/B1; Ford WSS-M2C205-A; Chrysler MS-6395; GM LL-A-025, 6094M, 4718M; ILSAC GF-6A, GF-5, GF-4…
0W-40 (AZF): API SP, SN PLUS, SN…; Chrysler MS-A0921, MS-12633, MS-10725, MS-10850; Nissan GT-R; GM dexos R
5W-50 (AMR): API SP, SN PLUS, SN…; Ford WSS-M2C931-C (Mustang); GM dexos R
AMSOIL Signature Series Synthetic Motor Oil is compatible with other conventional and synthetic motor oils. Mixing other oils with AMSOIL motor oils, however, will shorten the oil’s life expectancy and reduce its performance beneits.
AMSOIL does not support extended drain intervals where oils have been mixed. Aftermarket oil additives are not recommended for use with AMSOIL synthetic motor oils.
Normal Service – Up to 25,000 miles (40,200 km), 700 hours of operation or one year, whichever comes irst, in personal vehicles not operating under severe service.
Severe Service – Up to 15,000 miles (24,140 km), 700 hours of operation or one year, whichever comes irst. Severe service con- ditions include commercial or leet vehicles; excessive idling; or frequent towing, hauling, plowing or driving in dusty conditions.
• AMSOIL Oil Filters stop smaller particles, flow more oil and last longer than regular ilters. For best performance, use AMSOIL Oil Filters.
AMSOIL Signature Series 100% Synthetic Motor Oil is Warranty Secure, keeping your factory warranty intact. AMSOIL Synthetic ATV/UTV Motor Oil is a high-performance replacement for vehicle manufacturer-branded products and is also backed by the AMSOIL Limited Warranty. For details, visit AMSOIL.com/warrantysecure.
In America, the federal Magnuson Moss Warranty Act protects your freedom to choose the brand of parts and lubricants you think is best without fear of voiding your factory warranty.
Like our products, the AMSOIL Limited Warranty is built with an extra measure of protection. While some other oil companies guarantee their products only until you reach a specified mileage, we don't place restrictions on our warranty coverage based on total vehicle miles.
We stand behind our products for as long as you use them!
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