Yamaha Yamalube SAE90 GL4
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Code:8717009755427
Yamalube SAE 90 GL-4 is a high-quality mineral-based gear oil specifically designed for the lower units of small-displacement outboard motors. Its balanced formula provides reliable protection against wear and corrosion, even in harsh marine environments—especially saltwater and high humidity.
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Key Features and Benefits:
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API GL-4 specification – offers balanced gear protection without aggressive additives, making it safe for components made of yellow metals (like brass and bronze).
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Premium mineral base – ensures stable performance across a wide range of operating temperatures.
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Excellent rust and corrosion resistance – ideal for marine use.
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Low foaming properties – improves lubrication and cooling inside the gear case.
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Designed for long-term use – maintains its protective qualities under normal operating conditions.
Important Notes:
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Specifically recommended for small to mid-size outboard motors, especially 2-stroke and 4-stroke models up to around 30–40 HP (or as specified by the engine manufacturer).
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Not suitable for systems requiring GL-5 gear oil, as GL-4 has a gentler chemical composition and lower load-carrying capability.
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It is recommended to change the oil at least once per season or based on engine hours, according to Yamaha’s maintenance schedule.
