#   ICHIRO Mineral Gear Marine Oil – SAE 80W90 – 4L – Marine Engine Maintenance   958955

   [![Twitter](https://www.rhsboating.com.au/media/com_hikashop/images/icons/twitter_icon.png)Twitter](https://twitter.com/intent/tweet?url=https%3A%2F%2Fwww.rhsboating.com.au%2Fcategories%2Fichiro-mineral-gear-marine-oil-sae-80w90-4l-marine-engine-maintenance.html)[![Pinterest](https://www.rhsboating.com.au/media/com_hikashop/images/icons/pintinterest_icon.png)Pinterest](http://pinterest.com/pin/create/button/?url=https%3A%2F%2Fwww.rhsboating.com.au%2Fcategories%2Fichiro-mineral-gear-marine-oil-sae-80w90-4l-marine-engine-maintenance.html&media=https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/100x100/958955.jpg)[![Facebook](https://www.rhsboating.com.au/media/com_hikashop/images/icons/facebook_icon.png)Facebook](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.rhsboating.com.au%2Fcategories%2Fichiro-mineral-gear-marine-oil-sae-80w90-4l-marine-engine-maintenance.html&display=page)[![Linkedin](https://www.rhsboating.com.au/media/com_hikashop/images/icons/linkedin_icon.png)Linkedin](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fwww.rhsboating.com.au%2Fcategories%2Fichiro-mineral-gear-marine-oil-sae-80w90-4l-marine-engine-maintenance.html)

     [Previous](#)[Previous](#)[Previous](#) [![958955](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/300x300/958955.jpg "ICHIRO Mineral Gear Marine Oil – SAE 80W90 – 4L – Marine Engine Maintenance")](https://www.rhsboating.com.au/images/com_hikashop/upload/958955.jpg "ICHIRO Mineral Gear Marine Oil – SAE 80W90 – 4L – Marine Engine Maintenance")

 [Next](#)[Next](#)[Next](#)

   [![958955](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/300x300/958955.jpg "ICHIRO Mineral Gear Marine Oil – SAE 80W90 – 4L – Marine Engine Maintenance")](https://www.rhsboating.com.au/images/com_hikashop/upload/958955.jpg "ICHIRO Mineral Gear Marine Oil – SAE 80W90 – 4L – Marine Engine Maintenance")[![958955-1](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/300x300/chatgpt_image_sep_24_2026_09_02_48_am.jpg "ICHIRO Mineral Gear Marine Oil – SAE 80W90 – 4L – Marine Engine Maintenance")](https://www.rhsboating.com.au/images/com_hikashop/upload/chatgpt_image_sep_24_2026_09_02_48_am.jpg "ICHIRO Mineral Gear Marine Oil – SAE 80W90 – 4L – Marine Engine Maintenance")[![ichiro-1500x1500](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/300x300/ichiro-1500x1500.jpg "ICHIRO Mineral Gear Marine Oil – SAE 80W90 – 4L – Marine Engine Maintenance")](https://www.rhsboating.com.au/images/com_hikashop/upload/ichiro-1500x1500.jpg "ICHIRO Mineral Gear Marine Oil – SAE 80W90 – 4L – Marine Engine Maintenance")

    $292.64  each

            Brand: [Ichiro Marine Engine Oils & Lubricants](https://www.rhsboating.com.au/brands-listing/category/ichiro-marine-engine-oils-lubricants.html)

 [+](#)

 [–](#)

 The add to cart button will appear once you select the values above

    ### ICHIRO Mineral Gear Oil - SAE 80W90 - 4L

Plan your marine servicing around ICHIRO Byakko SAE 80W90 oil in the 4L container size. This listing identifies the particular grade and carton configuration, so the lubrication requirement and purchasing quantity can be checked together before ordering.

Byakko combines highly refined base oils with extreme-pressure additives for appropriate gear-lubrication applications. Its sulphur-phosphorus technology is intended to support heavily loaded tooth contact in suitable hypoid gear sets, while anti-foam additives help control excess foaming.

The SAE 80W90 designation distinguishes this oil from the other viscosities in the range. Check the gearbox or lower-unit instructions for the required lubricant and grade before use, including any specific performance category or material-compatibility requirement.

The formulation provides chemical and thermal stability and corrosion resistance, with additives described as compatible with seals and gaskets. Suitability still depends on the particular assembly and its lubricant specification; do not substitute a gear oil solely because its viscosity appears similar.

This code is supplied as 6 containers of 4L, giving 24 litres per carton. The larger containers are useful when arranging the oil quantity for servicing or maintaining a workshop supply. Check the carton quantity as well as the container size when calculating the amount required.

The ICHIRO range is produced in Singapore and blended and packaged under licence from ICHIRO Corporation by a member of the REPSOL group. The blend uses fresh oils rather than used oils. These manufacturing details identify the range; the particular grade and performance requirements remain the deciding factors for your engine or gear assembly.

### Product details

- Product code: 958955
- Range: ICHIRO Byakko
- Grade: SAE 80W90
- Container size: 4L
- Carton quantity: 6
- Total nominal volume per carton: 24 L
- Sold in carton quantities only
- Produced in Singapore
- Mineral gear oil
- Sulphur-phosphorus extreme-pressure additive technology
- Anti-foam additives
- Chemical and thermal stability; corrosion resistance