Engine Lubricants and Maintenance

The heart of a boat lives in a hostile environment where salt and humidity put every component to the test. Using unsuitable lubricants or skipping maintenance intervals means exposing the engine to internal corrosion. Correct maintenance requires choosing the right product for your engine's mechanical tolerances, whether inboard or outboard.

Our technical approach guides you through SAE and API ratings and manufacturer specifications. When you contact us, we verify the product against the technical specs required for your engine. We consider viscosity and anti-corrosion additives essential for protecting cylinders and valve train components during winter lay-up.

Our assistance translates into a rigorous selection of compatible products. We provide clear timelines, distinguishing between stock we hold in our warehouse and supplier stock. If you have doubts about whether an oil or marine grease matches the requirements in your owner's manual, ask for technical support before ordering to avoid mistakes.

Maintenance based on engine hours

Maintenance does not follow a fixed calendar - it must be calibrated to engine hours and operating conditions. An engine used for short runs requires different attention than one subjected to prolonged heavy loads.

• Check the SAE and API specs in your manual and avoid blends not tested for marine use.
• Use lithium soap-based greases that resist wash-off from salt water.
• Change the engine oil at the end of the season, before lay-up, to prevent acidic combustion residues from attacking the metal.
• Check the oil in the sterndrive or outboard lower unit: milky traces indicate water ingress that requires attention to the seals.

Choosing oil for a diesel inboard

The choice depends on the manufacturer's specification, tied to API standards. It is essential to use oils with marine additives that manage the internal condensation typical of humid environments.

Grease interval

Grease points exposed to the elements should be checked after every haul-out or wash-down to maintain the barrier against galvanic corrosion.

Use of additives

Additives keep injectors clean and stabilize fuel during lay-up periods, but they must be compatible with the fuel delivery system.

How often should marine grease be replaced?

Grease should be checked and replenished periodically at exposed grease points, especially after every haul-out or wash-down, to keep the protective barrier against corrosion intact.