AMSOIL 5W-30 Synthetic-Blend Motor Oil

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AMSOIL 5W-30 Synthetic-Blend Motor Oil

AMSOIL 5W-30 Synthetic-Blend Motor Oil is a value-tier gasoline engine oil that pairs quality conventional base oils with greater than 50 percent premium synthetic base oils and an advanced additive package. The 5W-30 grade carries product code SB530 and meets API SP (Resource Conserving), API SN Plus, API SN, ILSAC GF-6A, GF-5, and GF-4, along with GM dexos1 Gen 3, Chrysler MS-6395, and Ford WSS-M2C961-A1. This formulation is built for daily-driver owners who want measurable protection above conventional 5W-30 at a budget-friendly price.

Boosted synthetic content for modern engines

The high dose of synthetic base oil lifts thermal stability and oxidation resistance well beyond what a straight conventional 5W-30 can deliver. Turbocharged and gasoline direct-injection engines run hotter and load the oil harder than the port-fuel-injected designs of the 1990s, and the Synthetic-Blend formulation is engineered to handle those conditions. The blend also supports the tighter NOACK volatility and wear targets in API SP and ILSAC GF-6A licensing without forcing owners to pay full synthetic prices.

All-temperature flow and thickening control

A 5W-30 viscosity has to flow at winter startup and still protect at full operating temperature, and Synthetic-Blend 5W-30 covers both ends. Cold cranking viscosity is held at or below 6,600 cP at -30 C in the ASTM D5293 Cold Crank Simulator, and the pour point reaches -44 C (-47 F) by ASTM D97, so the oil stays fluid through prompt lubrication of bearings, lifters, and timing components at startup. At operating temperature the oil holds the SAE 30 kinematic viscosity window of 9.3 to 12.5 cSt at 100 C by ASTM D445, with a viscosity index at or above 120 to keep film strength stable as the engine heats.

Deposit, sludge, and oil-consumption control

Detergent and dispersant additives are dosed to suspend soot and combustion byproducts so they discharge with the used oil instead of plating onto pistons and ring lands. The boosted synthetic content also slows the chemistry that builds varnish in valve covers and oil galleries, helping keep the oil-pickup screen and PCV system clean. NOACK volatility is held at or below 12.5 percent weight loss by ASTM D5800, which limits the amount of light oil that boils off into the combustion chamber and out the PCV system. Lower volatility means less top-up between changes, fewer combustion-chamber deposits, and steadier viscosity over the drain interval.

Wear protection and high-temperature shear stability

Anti-wear chemistry forms a sacrificial film on cam lobes, lifter faces, and rod bearings during boundary lubrication events. High-temperature, high-shear viscosity is held at or above 2.9 cP at 150 C by ASTM D5481, the value required for API SP and OEM specifications that cover turbocharged and gasoline direct-injection engines. That HTHS floor keeps a load-bearing film in place under heavy throttle, towing, and sustained highway driving when oil temperatures climb.

Acid neutralization across the drain interval

Combustion creates acidic byproducts that attack bearings and gasket surfaces, and Synthetic-Blend 5W-30 carries a total base number at or above 6 by ASTM D2896. The reserve alkalinity gives the oil the headroom it needs to neutralize acids through the OEM-specified drain interval, which protects copper, lead, and ferrous wear surfaces from corrosive wear over time.

Recommended applications and service intervals

Synthetic-Blend 5W-30 is the right pick for late-model gasoline cars, SUVs, and light-duty trucks that call for any of the API, ILSAC, GM, Chrysler, or Ford specifications listed above, including turbocharged and direct-injection engines. The grade fits owners running shorter ownership cycles, second vehicles with low annual mileage, and budget-conscious daily drivers who want a step up from conventional without paying for a full synthetic. Match the right viscosity for the vehicle with the local application match guides linked in the order section.

• Drain interval: change at the interval stated by the vehicle manufacturer or signaled by the oil-life monitoring system.
• Oil filter: change the filter at every oil change.
• Modified engines, racing vehicles, and engines running alternative fuels such as E85, CNG, or propane are not the intended application for this product.
• Outside the United States and Canada, follow the vehicle manufacturer's recommended drain interval.

Synthetic-Blend 5W-30 is compatible with other synthetic, synthetic-blend, and conventional motor oils, though mixing shortens the life expectancy of the oil and reduces its performance benefits. Aftermarket oil additives are not recommended for use with Synthetic-Blend Motor Oil. Owners who want longer drain coverage and added test-verified protection should look at Signature Series or XL family options.

Typical technical properties

Order Synthetic-Blend 5W-30

Synthetic-Blend 5W-30 is stocked in a quart bottle (product code SB530QT-EA), case of 12 quarts (SB530QT-CA), gallon jug (SB5301G-EA), and 55-gallon drum (SB53055-EA). Using AMSOIL synthetic lubricants does not void a new vehicle or equipment manufacturer warranty, and all AMSOIL lubricants and filters are covered by the AMSOIL Limited Warranty. Confirm the correct viscosity and specification for the vehicle with the AMSOIL Vehicle Lookup Guide, compare the 5W-30 product family in the 5W-30 Oil Guide, then order AMSOIL 5W-30 Synthetic-Blend Motor Oil.

Frequently asked questions