AMSOIL XL 10W-40 Synthetic Motor Oil

   XL 1W-40 Synthetic Motor Oil

Benefits

Resistance to Oil Breakdown

AMSOIL XL (Extended Life) synthetic motor oil maintains its lubricating properties (viscosity) even under severe conditions such as prolonged high temperatures, where conventional oils typically break down. Oil breakdown leads to significantly increased viscosity, resulting in higher oil consumption, more engine deposits, increased wear, and harder engine starts.

The product has been tested in the GMOD (GM Oxidation and Deposit Test), which evaluates oxidation and deposit formation at high temperatures on a 5.7L V8 engine at 100°C for 100 hours. AMSOIL XL demonstrated 64% better viscosity control than oils that fail the GM dexos1 Gen 2 spec at Breakdown 1, proving that XL is better suited for high-heat operating conditions.

Protection Against LSPI (Low-Speed Pre-Ignition)

AMSOIL XL synthetic motor oil features unique chemical properties that help protect your engine from LSPI — a condition where fuel ignites earlier than intended. This typically occurs in modern turbocharged direct-injection engines and can cause serious piston and cylinder damage. AMSOIL XL is formulated to minimize LSPI risk and has passed 100% of the GM dexos1 Gen 2 LSPI tests – zero occurrences in five consecutive runs.

Keeps Engines Clean

AMSOIL XL is blended with high-quality additives including detergents, dispersants, and increased TBN (Total Base Number) to neutralize acids, prevent sludge, reduce carbon deposits, and inhibit corrosion. These properties help the engine stay up to 25% cleaner, resulting in smoother operation and long-term engine protection.

Lower Costs Through Extended Drain Intervals

Designed for up to 32,000 kilometers (20,000 miles) or 1 year, AMSOIL XL helps reduce oil change frequency, lowers maintenance costs, reduces time spent at service centers, saves money, and reduces waste oil and emissions.

Improved Fuel Economy and Lower Emissions

AMSOIL XL (except the 10W-40 grade) meets API SP specifications, which emphasize lower emissions, better fuel economy, and compatibility with modern emissions control systems. This helps extend the life of components like catalytic converters.

Applications

AMSOIL XL (Extended Life) synthetic motor oil is ideal for conventional gasoline engines and vehicles requiring:

10W-40 (XLO)
Standards: API SP, SN PLUS, SN…; ACEA A3/B3, A3/B4

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 ve-hicles; excessive idling; or frequent towing, hauling, plowing or driving in dusty conditions.
• Modified engines (non-stock), racing vehicles and vehicles using alternative fuels (E85, CNG, propane, etc.) are excluded from extended drain interval recommendations.
• Change at the vehicle manufacturer’s recommended drain interval outside U.S. and Canada.
• AMSOIL Oil Filters 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 filter when changing oil.
• Check oil regularly to maintain proper fill levels. AMSOIL Oil Filters stop smaller particles, flow more oil and last longer than regular filters.
For best performance, use AMSOIL Oil Filters.