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Penrite 75W-90 Full Synthetic Inboard/Outboard Gear Oil 500mL

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  • 1 YEAR


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Marine Gear Oil 75W-90 is a Full Synthetic, blue coloured, SAE 75W-90 gear oil formulated to meet the requirements of Outboard gear cases and Stern Drive units. It provides outstanding protection from cold start to operating temperatures, making gear selection and engagement smoother and easier.

Marine Gear Oil 75W-90 is designed to be used in Outboard and Stern Drive gear cases where the manufacturer recommends a SAE 75W-90 gear case oil. It can be used where an API GL-5 SAE 80W-90 or SAE 90 is recommended.

Marine Gear Oil 75W-90 is suitable for the following Outboards and Stern Drive units:


About The Brand

Penrite Oil Company is an Australian independent international lubricants company established in 1926. A premium, high quality and trusted brand that manufactures the right product for every application. Known as “A Better Class of Oil”, Penrite is voted Number 1 by independent mechanics and major customers as a supplier of choice.

  • Standard Shipping is free on all orders. Oils & Lubricant products can only be sent via Standard Shipping.
  • Express Shipping is $10 flat rate.
  • Pick up is available from our warehouse at 1/84 Brunel Road, Seaford VIC 3198 between the hours of 8:30am to 3:30pm weekdays. You will be notified by email when your order is ready for pick up.

Delivery Time

Orders are dispatched same business day if ordered before 3:00pm AEDT. All orders are dispatched from Melbourne, Victoria and are sent via Australia Post.

For delivery time estimates with Australia Post please use their delivery calculator here:

If you have any questions relating to shipping, please contact us by emailing

Outboard parts

By: on 7 November 2022
Could not thank Stuart enough. Expert advice and prompt response. Great quality oil- easy to install.

Outboard parts

By: on 6 November 2022
Could not thank Stuart enough. Expert advice and prompt response. Great quality oil- easy to install.

Review Penrite 75W-90 Full Synthetic Inboard/Outbo

By: on 18 November 2019
Thanks for my products great price and service will b using again thanks phil

Exactly what i needed

By: on 12 April 2019
Awesome product. Awesome service and delivery was reslly quick

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