AMSOIL EXTENDED-LIFE 5W-20 100% SYNTHETIC MOTOR OIL

AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil delivers 20,000-mile drain intervals and 37% more cleaning power than AMSOIL OE Synthetic Motor Oil, making it a smart upgrade for drivers who want fewer oil changes without compromising engine protection.

Modern gasoline engines running 5W-20 oil face a tough combination of high operating temperatures, tight tolerances, and the growing threat of low-speed pre-ignition in turbocharged GDI applications. Oil that thins out or loads up with deposits over extended mileage creates a cascade of problems: increased oil consumption, sludge buildup, and accelerated component wear. The right synthetic oil needs to hold its viscosity, neutralize acids, and keep internals clean well beyond a conventional drain interval.

RESISTS OIL BREAKDOWN OVER EXTENDED MILEAGE
Some oils thicken significantly after prolonged exposure to high-temperature operation, leading to sluggish flow, increased oil consumption, and deposit formation. AMSOIL Extended-Life 5W-20 maintains its viscosity under extreme conditions thanks to advanced synthetic base oils with a viscosity index of 155 (ASTM D2270). NOACK volatility of 8.4% (ASTM D5800) means less oil is lost to evaporation compared to oils that burn off lighter fractions and leave behind thicker, deposit-prone residue. The result is consistent protection from the first mile to the last, even at extended drain intervals.

PROTECTS AGAINST LOW-SPEED PRE-IGNITION
LSPI is a real concern in late-model turbocharged gasoline direct-injection engines found in vehicles like the Ford F-150 with the 2.7L or 3.5L EcoBoost, the Honda CR-V 1.5T, and the Chevy Silverado 2.7L turbo. LSPI occurs when the fuel/air mixture ignites before spark-triggered ignition, producing violent pressure spikes that can crack pistons and bend connecting rods. AMSOIL Extended-Life 5W-20 uses a chemistry specifically formulated to guard against LSPI events, meeting the latest API SP and ILSAC GF-6A requirements that address this failure mode.

KEEPS ENGINES CLEAN WITH A BOOSTED ADDITIVE PACKAGE
Sludge and carbon deposits rob engines of efficiency and shorten component life. Extended-Life 5W-20 delivers 37% more cleaning power than AMSOIL OE Synthetic Motor Oil, using fortified detergent and dispersant additives to neutralize acids, suspend contaminants, and prevent sludge and carbon deposits from forming on critical surfaces. That boosted additive package is what supports the longer drain interval while keeping pistons, rings, and oil passages clean. A total base number of 10.7 (ASTM D2896) across the entire Extended-Life lineup provides a strong acid-neutralizing reserve throughout the service interval.

EXCELLENT COLD-WEATHER PERFORMANCE
Cold starts account for a significant share of engine wear because oil needs time to reach critical surfaces after sitting overnight. AMSOIL Extended-Life 5W-20 has a cold-crank simulator viscosity of 5,242 cP at -30°C (ASTM D5293) and a pour point of -42°C (-44°F) per ASTM D97. That means faster oil flow at startup in cold climates, reducing dry-start wear in vehicles like the Toyota Camry, Honda Accord, Ford Escape, and Jeep Grand Cherokee that commonly call for a 5W-20 synthetic motor oil.

REDUCES MAINTENANCE FOR PERSONAL AND FLEET VEHICLES
A 20,000-mile drain interval cuts the number of oil changes roughly in half compared to a typical 10,000-mile conventional or semi-synthetic schedule. For fleet managers running Ford, Chevy, or Ram trucks, that translates directly to lower maintenance costs, less vehicle downtime, and reduced waste oil. For personal vehicles, it means changing oil on your own schedule rather than chasing service reminders every few months.

Specifications and Compatibility
AMSOIL Extended-Life 5W-20 (XLM) meets or exceeds the following specifications: API SQ (Resource Conserving), SP, SN Plus; ILSAC GF-7A, GF-6A, GF-5; GM dexos1 Gen 3 (supersedes dexos1 Gen 2 and 6094M); ACEA A1/B1; Chrysler MS-6395; Ford WSS-M2C930-A, WSS-M2C945-A, WSS-M2C945-B1, WSS-M2C960-A1, WSS-M2C970-A1; and Honda HTM-06. It is compatible with conventional and other synthetic motor oils, though mixing will shorten service life. Aftermarket oil additives are not recommended.

Service Life
Normal Service: Up to 20,000 miles (32,000 km) or one year, whichever comes first, in personal vehicles not operating under severe service.

Severe Service: Up to 12,000 miles (20,000 km) or one year, whichever comes first. Severe service conditions include commercial or fleet vehicles, excessive idling, frequent towing, hauling, plowing, or driving in dusty conditions. Modified (non-stock) engines, racing vehicles, and vehicles using alternative fuels (E85, CNG, propane, etc.) are excluded from extended drain interval recommendations.

For best performance, use AMSOIL Oil Filters, which are designed for extended drain intervals. Do not exceed 12,000 miles (20,000 km) or one year with other brand filters unless longer intervals are recommended by the vehicle manufacturer. Always change the filter when changing oil. Check oil regularly to maintain proper fill levels.