4 Stroke Engine Oil: Performance, Selection & Maintenance

Four-stroke engines power everything from motorcycles to lawn mowers, relying on high-quality oil to reduce friction, dissipate heat, and protect vital components. This guide explores  4-stroke engine oil solutions, designed for maximum efficiency and longevity.

1. What Makes 4-Stroke Engine Oil Different?

Unlike 2-stroke oils, 4 stroke oils operate in a closed-loop system, circulating continuously through the engine. Key features include:

• Viscosity Control: Formulated to maintain consistency across temperature ranges (e.g., -30°C to 150°C).
• Detergency: Prevents sludge buildup in pistons and valves.
• Fuel Efficiency: Low-friction additives reduce energy waste.

TERZO’s 4-stroke oils meet strict standards like API SN and JASO MA2, ensuring compatibility with modern engines.

Pro Tip: Always check your owner’s manual for viscosity recommendations (e.g., "10W-40 for most climates").

2. TERZO’s 4-Stroke Engine Oil Range

Our product lineup caters to diverse needs:

3. Advanced Technology Behind TERZO Oils

Our formulas leverage proprietary innovations:

• Liquid Titanium Molybdenum Coating: Forms a wear-resistant film on metal surfaces, reducing friction by up to 20%.
• Low SAPS Formula: Minimizes sulfated ash, phosphorus, and sulfur (ideal for catalytic converters).
• Multi-Grade Stability: Maintains viscosity during extreme temperature shifts (e.g., -30°C cold starts to 150°C under load).

Example: The SuperSynth 0W-20 achieves ILSAC GF-6A certification, improving fuel economy by 3% compared to conventional oils.

4. Application Scenarios & Recommendations

• Urban Riders: Use 10W-40 for balanced protection in stop-and-go traffic.
• Long-Distance Touring: Opt for 15W-50 for high-temperature stability on highways.
• Racing Enthusiasts: 10W-50 Racing Oil handles extreme RPMs and heat in competition settings.

Compatibility Check:

• Works with engines using gasoline, ethanol blends (E10-E85), and modern fuel-saving technologies.

5. Maintenance Best Practices

Extend engine life with these simple steps:

1. Change Interval: Every 5,000–8,000 km (3,000–5,000 miles) under normal conditions.
2. Top-Up Tips: Use a clean funnel to avoid contamination; check levels weekly during heavy use.
3. Storage: Store oils in a cool, dry place away from direct sunlight.

   

   
   

Warning Signs of Degraded Oil:

• Dark, gritty texture
• Burning smell from the engine bay
• Unusual engine noises (knocking/ticking)

6. Why Choose TERZO?

• Global OEM Approvals: Compatible with Honda, Yama
• 
  ha, Kawasaki, and more.
• Eco-Friendly Options: Low-VOC formulations reduce environmental impact.
• 24/7 Support: Technical assistance available via TERZO Customer Portal.