AMSOIL 5W-30 100% SYNTHETIC DIESEL OIL

AMSOIL 5W-30 100% Synthetic Diesel Oil delivers premium engine protection and viscosity stability for smaller American diesel pickups, vans, cars and SUVs. It is a direct upgrade over conventional, synthetic-blend and competing synthetic diesel oils, formulated to keep these efficient diesel engines running at peak performance.

Smaller diesel engines in vehicles like the Chevy Silverado 1500 3.0L Duramax, GMC Canyon 2.8L Duramax, Ford F-150 3.0L Power Stroke and Ram 1500 3.0L EcoDiesel face unique challenges. These compact, high-efficiency powerplants generate significant heat and combustion byproducts relative to their displacement, and they rely heavily on tight tolerances and precise valve timing to deliver their rated fuel economy and torque. Soot contamination, thermal breakdown and oil volatility are constant threats that conventional and synthetic-blend oils often cannot manage over a full drain interval.

UP TO 6X MORE WEAR PROTECTION THAN REQUIRED BY A LEADING INDUSTRY STANDARD
Camshaft lobe wear directly impacts valve timing, which leads to lost horsepower and reduced fuel economy. AMSOIL 5W-30 Synthetic Diesel Oil maintains a strong fluid film that keeps metal surfaces separated under load, and its robust anti-wear additive package provides additional protection in metal-to-metal contact zones. Third-party testing in the OM646LA cam wear test showed this formulation delivers up to 6X more wear protection than required by a leading industry standard. For owners of GM dexos D-approved vehicles or Ford trucks requiring WSS-M2C214-B1, that level of protection translates directly to longer engine life and fewer costly repairs.

VISCOSITY CONTROL THAT FIGHTS SOOT-RELATED THICKENING
Diesel combustion produces soot particles that accumulate in the oil over time. If those particles agglomerate into larger clusters, they thicken the oil and accelerate wear on bearings, rings and cylinder walls. AMSOIL 5W-30 Synthetic Diesel Oil uses advanced synthetic base oils paired with detergent and dispersant additives to keep individual soot particles suspended and separated. This minimizes viscosity change throughout the drain interval, maintaining the proper oil film thickness for consistent engine protection and fuel efficiency. With a viscosity index of 169, this oil holds its grade across a wide temperature range better than oils built on conventional base stocks.

EXTREME TEMPERATURE PERFORMANCE
Cold starts are one of the highest-wear events a diesel engine experiences. AMSOIL 5W-30 Synthetic Diesel Oil flows readily at low temperatures, with a cold-crank simulator viscosity of 6,158 cP at -30°C and a pour point of -45°C (-49°F). That means faster oil circulation on winter mornings and reduced dry-start wear in the Chevy 3.0L Duramax or Ford 3.0L Power Stroke. On the hot side, the formulation resists oxidation and thermal breakdown better than conventional diesel oils, keeping the engine clean and maintaining power output even during sustained high-temperature operation like highway towing or mountain driving in summer heat. The HTHS viscosity of 3.52 cP confirms the oil maintains a protective film even under severe shear and temperature stress.

LOW VOLATILITY REDUCES OIL CONSUMPTION
Oil that evaporates easily under high heat burns off faster, increases oil consumption and sends vapor into the combustion chamber where it can foul emissions equipment. AMSOIL 5W-30 Synthetic Diesel Oil posts a NOACK volatility of just 8.3% weight loss, meaning it resists burn-off and stays in the crankcase where it belongs. This is especially relevant for vehicles equipped with diesel particulate filters and other aftertreatment systems. The oil is safe for diesel emissions systems and carries a sulfated ash content of 0.80 wt. %, keeping it within the limits needed to protect catalytic converters and DPFs from ash accumulation.

SPECIFICATIONS AND COMPATIBILITY
AMSOIL 5W-30 100% Synthetic Diesel Oil meets the following specifications: GM dexos D, dexos2, Chrysler MS-11106, Ford WSS-M2C214-B1, ACEA C2, ACEA C3 and ILSAC GF-6A. It is designed for diesel pickups, vans, cars and SUVs requiring any of these specifications. It is not intended for applications requiring API CK-4, SP or earlier API diesel specifications. The oil is compatible with conventional and synthetic oils, though mixing will reduce performance benefits. Aftermarket oil additives are not recommended for use with this product.

SERVICE LIFE
AMSOIL 5W-30 100% Synthetic Diesel Oil is recommended for the drain intervals stated by the original equipment manufacturer. Refer to your owner's manual for the specific oil change interval. Intervals may be extended beyond the OEM recommendation with oil analysis. Change the oil filter at the time of every oil change.