Maxima Racing Oil Maxum 4 Mineral 4T Engine Oil (1 Gallon) 30-209128 / 349128 / 359128

Product Description

Maxima Racing Oil Maxum 4 is a conventional mineral 4-stroke engine oil engineered for off-road, adventure touring, dual-sport, and street motorcycles. Designed as a multigrade lubricant for modern powersports engines, it provides critical barrier protection across moving valvetrain, cylinder, and transmission components. Available in multiple viscosity options, this formulation delivers dependable lubrication in extreme running environments.

Built with a viscosity-stable formula and high-temperature additives, Maxum 4 optimizes overall engine cleanliness while actively controlling oxidation, deposit formation, and mechanical friction. Every batch exceeds both API SL and JASO MA2 requirements, ensuring slip-free engagement and smooth operation in integrated wet-clutch systems. Each bottle provides 1 US gallon (3.8 liters) of fluid, made in the USA for hardworking 4T engines.

Available Viscosities & Part Numbers (1 Gallon / 3.8L):

• Maxima Maxum 4 Mineral 4T Engine Oil 10W-30 (1 Gallon): MPN 30-209128
• Maxima Maxum 4 Mineral 4T Engine Oil 10W-40 (1 Gallon): MPN 349128
• Maxima Maxum 4 Mineral 4T Engine Oil 20W-50 (1 Gallon): MPN 359128

Top Features: Maxima Racing Oil Maxum 4 Mineral 4T Engine Oil

• Multigrade mineral-based formula delivers anti-wear protection and friction reduction across 4-stroke powerplants.
• Viscosity-stable base stocks combined with high-temperature additives resist breakdown under extreme heat.
• Formulated to control oxidation, minimize thermal degradation, and optimize internal component cleanliness.
• Meets and exceeds JASO MA2 and API SL performance classifications for wet-clutch operation.
• Supplied in a 1 US gallon (3.8 liter) bottle, proudly made in the USA.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Please verify fitment for your specific make, model, and year before purchasing. Contact us and we will help you find the right part.

Frequently Asked Questions

Q: What part numbers correspond to each viscosity in this 1-gallon size?
A: MPN 30-209128 is 10W-30, MPN 349128 is 10W-40, and MPN 359128 is 20W-50.

Q: Is Maxima Maxum 4 safe for wet-clutch motorcycles?
A: Yes. Maxum 4 meets and exceeds JASO MA2 standards, making it safe for wet-clutch, shared-sump 4-stroke motorcycle applications.

Q: Are these sold individually or as a full case?
A: These are packaged 4 to a case by the distributor but are sold each as individual 1 US gallon (3.8 liter) containers.

Expert Pro-Tip: Always bring the engine up to normal operating temperature before draining fluid so suspended contaminants exit with the waste oil. When switching viscosity weights—such as moving to 20W-50 for hot-weather desert riding or 10W-30 for cold-weather conditions—confirm that the weight aligns with your motorcycle manufacturer's ambient temperature charts to ensure proper oil pressure and pump delivery.

Recommended Pairings:

• Motorcycle Chemicals & Maintenance
• MX Off-Road Motorcycle Tools
• Rekluse Clutch Components

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

Moto-House MX - Choice of Champions - Your premier powersports source with great customer service and lightning-fast shipping straight to your door.