Find the product that does exactly what you need it to. Simple.

Browse a selection from Rock Oil’s vast range. We’re regularly adding and updating items on our product set, but if you can’t immediately find what you’re looking for, contact us for expert advice, or use our lubricant selector to find the right oil for your vehicle.

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Multi Industry • Biodegradable, Hydraulic Oil

BIO SYN 46 Hydraulic Oil

A high performance biodegradable hydraulic oil based on synthetic carboxylic esters and containing specific ashless (non-metallic) additives to improve its general properties.

Developed to answer the growing demand for low eco-toxicity,...

Marine • Biodegradable, Synthetic, 2-Stroke Oils

BIOMARINE III

During the last few years, a rapidly growing interest has emerged in biodegradable, high performance outboard engine oils, which help to reduce water pollution. Mineral oil-based lubricants are not readily...

Marine • Gear & Transmission Oil, Hydraulic Oil

Marine Power Steering Fluid

MPH is a multi-functional power transmission fluid which satisfies the requirements of most major marine equipment manufacturers.

Marine • Marine Diesel Engine Oils

MARINE-GUARD 30 (12 TBN)

A high performance, medium alkalinity, diesel engine oil for medium and high speed trunk piston diesel engines. MARINE-GUARD 30 (12 TBN) is manufactured with high quality base oils and market...

Marine • Marine Diesel Engine Oils

MARINE-GUARD 3015 TP

High performance, medium alkalinity engine oils for medium and high-speed trunk piston marine diesel engines. They are manufactured with high-quality base oils and market-leading additives.

These lubricants are suitable for use...

Marine • Marine Diesel Engine Oils

MARINE-GUARD 4015 TP

High performance, medium alkalinity engine oils for medium and high-speed trunk piston marine diesel engines. They are manufactured with high-quality base oils and market-leading additives.

These lubricants are suitable for use...

Marine • Gear & Transmission Oil

MP Gear Oil

A high performance axle lubricant developed using high-quality raw materials.

Suitable for marine applications where EP oil is recommended, particularly outboard lower units and I/O transmissions.

Marine • 4-Stroke Oils

MP LITE-D

A high-quality multi-grade engine oil manufactured suitable for use in small capacity non-turbo diesel engines such as those found in inland marine environments, including narrow boats.

Suitable for use in engines...

Marine • 4-Stroke Oils

MP PLUS

A high performance semi-synthetic engine oil is specially designed for use in all modern four-stroke outboards where 10W-30, 10W-40, 15W-40, 20W-40 or 25W-40 engine oil is recommended.