XL 10W40 Synthetic Engine Oil

Resists Oil Breakdown
XL Synthetic Engine Oil maintains its fluidity (viscosity) under the most extreme conditions. Some oils break down and significantly increase in viscosity after extended periods of high-temperature operation. These changes can cause excessive oil consumption, engine deposits, accelerated wear and difficult cold-starts. The GM Oxidation and Deposit (GMOD) Test consists of a 5.7L V8 engine running at 293ºF (100º hotter than normal) for 100 hours. These severe operating conditions test an oils ability to control viscosity increase, deposits and oil consumption. The testing revealed that AMSOIL XL Synthetic Engine Oil provides 64 percent more protection against oil breakdown¹ than required by the GM dexos1^® Gen 2 specification, ensuring protection in extreme temperatures.

Protects Pistons from Low-Speed Pre-Ignition
XL Synthetic Engine Oil features unique chemistry proven to protect your engine against the harmful effects of low-speed pre-ignition (LSPI). LSPI is the spontaneous ignition of the fuel/air mixture prior to spark-triggered ignition. Most new engines feature gasoline direct-inject (GDI), often coupled with a turbocharger. These technologies heighten the possibility of LSPI events, which can destroy pistons and connecting rods. A properly formulated engine oil is critical for protecting your engine against LSPI.

Original equipment manufacturers (OEMs) like GM have addressed the issue by designing tests to determine a engine oil's ability to prevent LSPI. XL Synthetic Engine Oil achieved 100 percent protection against LSPI² – zero occurrences were recorded throughout five consecutive tests.

Keeps Engines Clean
AMSOIL XL Synthetic Engine Oil is fortified with detergent and dispersant additives. Its boosted additive package effectively raises the total base number (TBN) to neutralise acids and resist sludge, corrosion and carbon deposits. XL provides 25 percent more cleaning power³ to help keep your engine running smoother, longer.

Reduces Maintenance
Motorists, business owners and fleet managers benefit from the boosted engine protection of AMSOIL XL Synthetic Engine Oil. Frequent oil changes are expensive, time-consuming and inconvenient. The extra protection built into XL can provide extended drain intervals up to 12,000 miles or one year⁴, if you choose, allowing you to change oil on your schedule, reduce maintenance, save money and reduce waste oil.

Maximises Fuel Economy & Maintains Low Emissions
XL Synthetic Engine Oil is licensed by the American Petroleum Institute (API) to meet and exceed the requirements commonly found in owner's manuals. It excels in fuel-economy testing, earning the additional "Resource Conserving" designation⁵ from the API. XL is also friendly toward modern emissions control systems, promoting proper operation of catalytic converters for optimum service life and low exhaust emissions.

¹Based on independent testing of AMSOIL XL 5W-30 engine oil in the GMOD engine test required for the GM dexos1 Gen2 specification.
²_{Based on zero LSPI events in five consecutive tests of AMSOIL XL 5W-30 Engine Oil in the LSPI engine test required by the GM dexos1 Gen 2 specification.}
³_{vs. AMSOIL OE Engine Oil}
⁴_{See reverse side for details.}
⁵_{Applicable to XL 0W-20, 5W-20, 5W-30 and 10W-30 engine oil.}

_{All trademarked names 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.}

APPLICATIONS
Use AMSOIL XL Synthetic Engine Oil in applications that require any of the following specifications:

10W-40 (XLO)

• API SN PLUS, SM...; ACEA A3/B3, A3/B4

COMPATIBILITY
AMSOIL XL Synthetic Engine Oil is compatible with conventional and other synthetic engine oils. Mixing other oils with AMSOIL engine oils, however, will shorten the oil life expectancy and reduce the performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives are not recommended for use with AMSOIL XL Synthetic Engine Oil.

TECHNICAL SERVICES
For immediate answers to your technical questions call (715) 399-TECH (8324) between 8 a.m. and 5 p.m. Central time or email tech@amsoil.com.

SERVICE LIFE
In petrol vehicles, AMSOIL XL Synthetic Engine Oil is recommended for up to 12,000 miles/one year oil change intervals, or longer when recommended in owner's manuals or indicated by electronic oil life monitoring systems. Change the
oil filter at every oil change regardless of filter brand.