AMSOIL Formula 4 Stroke
Synthetic 10w30 SAE 30 Small Engine Oil

Commercial Grade All-Season Engine Oil

AMSOIL Formula 4 Stroke Synthetic Small Engine Oil is a robust formulation designed for hot temperature, severe service operation of small engines where routine maintenance is often difficult or infrequent. It is formulated with premium synthetic base oils that exceed both 10w30 multi-grade and SAE 30 straight-grade viscosity requirements. Unlike conventional SAE 30 motor oils, AMSOIL Formula 4 Stroke Small Engine Oil has a naturally high viscosity index and does not contain paraffin (wax). It has a -38°F pour point and qualifies for SAE 10w, making it an all-season, multi-grade lubricant with a wide operating temperature range. As an SAE 30 weight motor oil, AMSOIL Formula 4 Stroke Small Engine Oil provides outstanding protection for hot operating engines. It is a commercial grade lubricant that helps improve productivity and reduce maintenance costs through superior engine protection.

Resists Heat and Reduces Oil Consumption

AMSOIL engineered Formula 4 Stroke Synthetic Small Engine Oil to withstand the high temperatures of hard working engines. It effectively resists oxidation and oil vaporization to control oil thickening and reduce oil consumption. AMSOIL Formula 4 Stroke Small Engine Oil lasts longer in service than conventional oils and keeps engines clean for peak operating efficiency.

Excellent For Transmission Systems

AMSOIL Formula 4 Stroke Synthetic Small Engine Oil is a shear stable formulation that contains no friction modifiers. It will not break down during rigorous mechanical activity, making it ideal for hydraulic or hydrostatic systems and chain cases. It is wet clutch compatible and designed to prevent clutch slippage in commercial or recreational transmissions. AMSOIL Formula 4 Stroke Small Engine Oil protects gears and bearings during high-demand, commercial-duty service.

Superior Protection

AMSOIL Formula 4 Stroke Synthetic Small Engine Oil is formulated with high levels of premium anti-wear and detergent additive technology. It provides severe service protection of pistons, bearings and gears and effectively neutralizes acids from combustion by-products prone to small engines.

Superior Rust Prevention

AMSOIL Formula 4 Stroke Synthetic Small Engine Oil is fortified with superior anti-rust additives for outstanding rust prevention, which is especially important during equipment storage or infrequent use.

Service Life

AMSOIL Formula 4 Stroke Synthetic Small Engine Oil is a long-life formulation that can last longer than conventional petroleum oils. It provides an extra measure of protection when equipment typically goes longer between oil changes than is recommended by the equipment manufacturer. Due to wide variances in operating conditions and maintenance practices, AMSOIL recommends extending oil drain intervals when monitored by oil analysis or following the equipment manufacturer-established oil drain intervals.

Applications

AMSOIL Formula 4 Stroke Synthetic Small Engine Oil is recommended for use in gasoline and light-duty diesel engines, transmissions, hydraulics and chain cases wherever SAE 10w30 or SAE 30 oil is specified.

Applications include:

Engine manufacturers include:

Equipment brands include:

Performance Specifications

AMSOIL Formula 4 Stroke Synthetic Small Engine Oil meets or exceeds the following performance test requirements and may be used in motors requiring oils meeting these specifications:

• API SL, SJ, SH, SG (Gasoline)
• API CF, CD (Diesel)
• JASO MA, MA2 (Motorcycle Wet Clutch)
• ISO-L-EMA2 (Wet Clutch)

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