Gear lube 80W-90 237 ml – code: MC92-8M0121963 – Mercury

Gear Lube 80W-90 237 ml Mercury (code MC92-8M0121963)

The Gear Lube 80W-90 237 ml (code MC92-8M0121963) is a gear oil dedicated to marine transmissions, offered in a practical format designed for routine maintenance operations. It is a lubricant of grade SAE 80W-90, indicated for use in gear cases of outboard motors and related applications in the nautical field.

This version is suitable for use on outboards up to 75HP and is commonly associated with use on Mercury; it can also be used on other outboards when the specification required by the manufacturer matches the grade and classification shown.

Product features and details

The product is designed for those looking for a gear oil with specifications suitable for the marine environment and with packaging convenient to handle on board or in the workshop. Below are the main identifying and technical elements available.

• Type: gear oil for marine transmissions
• Grade: SAE 80W-90
• Classification: API GL-4
• Format: 237 ml
• Product code: MC92-8M0121963
• Stated intended use: outboard up to 75HP
• Brand/line: Mercury (original Quicksilver oil, as per existing description)

Identification and correct replacement

For a correct choice of replacement, the main reference is the code MC92-8M0121963. In the marine field, identification by code is often the most reliable method to avoid supply errors, especially when there are oil variants with different grades or specifications.

Typical applications

The Gear Lube 80W-90 is intended for lubricating reducers and gear cases in the marine environment. It is suitable for scheduled maintenance interventions and to restore the correct lubricant level in the transmission, according to the procedures provided by the engine manufacturer.

• Outboard motors up to 75HP (as indicated in the description)
• Gear case and transmission components that require an oil SAE 80W-90 with classification API GL-4
• Typical usage contexts: nautical workshop, storage, seasonal maintenance, onboard interventions

Compatibility note: the indication “Mercury and other outboards” must always be verified by comparing the specifications required by the engine manual or the technical documentation of the transmission. In case of doubt, it is advisable to follow the spare part code and the reported specifications.

Operational advantages

• Handy size: the pack of 237 ml it is suitable for targeted interventions and facilitates management in the workshop or onboard.
• Clear specifications: grade 80W-90 and classification API GL-4 allow an immediate comparison with what is required by the manufacturer.
• Identifiable spare part: the code MC92-8M0121963 helps to order and reorder the same product consistently over time.
• Setting for marine use: formulation designed for marine gearboxes, in line with use on outboards.

Use and maintenance notes

Gear oil must be used following the indications of the engine/transmission manufacturer. In particular, for marine reducers it is important to respect procedures and checks provided during oil change or topping up.

• Check specifications: before use, check that the transmission requires SAE 80W-90 and API GL-4.
• Procedure: follow the instructions in the manual (filling/draining points, level check methods, any visual inspections).
• Condition check: during maintenance, it is good practice to check the condition of the removed lubricant and the integrity of the seals according to standard workshop procedures.
• Storage: keep the product in intact packaging and in suitable conditions, avoiding contamination before use.

For a purchase without uncertainties, it is recommended to always compare the code MC92-8M0121963 with that reported in the engine documentation or with the previously used spare part.

FAQ – Frequently Asked Questions

What is the product code of the Gear Lube 80W-90 Mercury 237 ml?

The product code is MC92-8M0121963.

What grade and classification does this gear oil have?

It has SAE 80W-90 grade and API GL-4 classification.

For which engines is it indicated according to the description?

It is indicated for outboard engines up to 75HP.

Is this Gear Lube usable only on Mercury engines?

It is commonly recommended for Mercury; it can also be used on other outboards if the manufacturer requires SAE 80W-90 with API GL-4. Verification in the manual is recommended.

What is the package size?

The package is 237 ml, in a practical format for maintenance and top-ups.