Factory Approved Malibu® High Performance Full Synthetic 5W-30 Engine Oil

Engineered for Ultimate Marine Performance
Malibu and Axis® High-Performance Full Synthetic 5W-30 Engine Oil is specifically designed for Malibu, Axis, and other high-performance marine engines. Built to optimize reliability, torque, horsepower, emissions, and durability, this oil delivers unmatched protection under demanding marine conditions

The M-Series requires 8 quarts of 5W-30 oil and an oil filter for M5 and M6 engines

PLEASE SEE!: As of 12/1/25, there is a Service Bulletin on Select M6DI motors that need to convert their oil to the 0W-40. See the link to the direct Bulletin below. If you have received a letter from Malibu, your motor is most likely in effect. If unsure please reach out and we can confirm.

0W-40 BULLETIN

If your motor falls under this recall, you will need to order the following items. 

Mobil 1 OW-40 OIL QTY 8

Second Gen oil filter QTY 1

New oil cap stating OW-40. One-time purchase, but would be covered under the bulletin and can be done for free at your local service shop. 

If your engine is subject to extreme use, such as excessive ballast weight, long idle time, low use, elevations above 5,000 ft., or commercial use, it is recommended to change oil and filter every 25 hours. See your specific owner's manual for more details or see below for the chart.

LT4 kits include 9 quarts of 0W-40 oil and an oil filter.

Precision Formulated for Malibu & Axis Engines
Developed for Malibu and Axis M-Series engines, and ideal for any marine engine where 5W-30 is recommended or specified, this oil offers performance and protection far beyond conventional and synthetic blend alternatives.

Unmatched Engine Protection & Durability
Synthetic oil molecules provide better uniformity, fewer impurities, and superior protection compared to conventional oils. Our full synthetic formula withstands extreme temperatures and high loads, delivering cleaner engine performance, reduced sludge,  corrosion resistance, and minimized oil burn-off.

Better Wear Protection & Reduced Thermal Breakdown
With over 80% better protection than the latest API requirements, it reduces friction during high torque and acceleration. The advanced formulation helps keep engines running cleaner and stronger by resisting high-heat degradation and deposit formation.

Ideal for Severe Marine Conditions
Designed for gasoline-fueled marine engines operating under extreme conditions, it also offers reliable protection for turbochargers and emission control systems.

Why Choose Full Synthetic Over Synthetic Blend?
Unlike synthetic blends that only contain a small percentage of synthetic base oil, Malibu Full Synthetic 5W-30 provides full-performance benefits at a comparable cost—without compromise.