Engine Oil & Additives

Marine engine oils serve a variety of useful functions in preserving and protecting an inboard or outboard motor. Over time general wear and tear, as well as microbial contamination and excess water, can hamper the performance of a vessel’s engine. As such, boat engine oils and additives serve to protect an engine and help it last longer. Browse our selection of marine diesel oils and fuel treatments below.

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Showing 1–36 of 50 results

Marine 16 Diesel Fuel Complete - Image

Marine 16 Diesel Fuel Complete

£26.95
Star Tron Diesel Additive - Image

Star Tron Diesel Additive

£24.95 - £64.95
Marine 16 Diesel Bug Treatment 500ml - Image

Marine 16 Diesel Bug Treatment 500ml

£51.11 £44.95
Marine 16 Diesel Bug Fuel Treatment 100ml - Image

Marine 16 Diesel Bug Fuel Treatment 100ml

£14.38 £12.95
Liqui Moly Marine 4T Motor Oil - 10W-30

Liqui Moly Marine 4T Motor Oil

£19.95 - £69.95
Quicksilver Corrosion Guard - Image

Quicksilver Corrosion Guard

£25.95
Quicksilver 2-Stroke Oil 4L 30 - Image

Quicksilver 2-Stroke Oil 4L 30

£64.95 £49.95
Quicksilver Premium 2-Stroke Oil 4L 30 - Image

Quicksilver Premium 2-Stroke Oil 4L 30

£47.95
Quicksilver 4 Stroke Outboard Oil 1ltr - New Image

Quicksilver 4 Stroke Outboard Oil 1ltr

£18.73 £17.95
Quicksilver Quickstor Fuel Stabiliser 355ml - Image

Quicksilver Quickstor Fuel Stabiliser 355ml

£24.95
Enzyme Energy (Soltron) Fuel Treatment 500ml - Image
Out of stock

Enzyme Energy (Soltron) Fuel Treatment 500ml

£59.95 £54.95
Fuel Set - Fuel Conditioner - Image

Fuel Set – Fuel Conditioner

£31.50 £29.95
Quicksilver 4-Stroke Outboard Oil 4 Litre 10w-30 - Image

Quicksilver 4-Stroke Outboard Oil 4 Litre 10w-30

£55.08 £54.95
Quicksilver 2-Stroke Oil - New Image

Quicksilver 2-Stroke Oil

£16.95
Quicksilver Diesel Oil - New Image

Quicksilver Diesel Oil

£47.70 £46.95
Liqui Moly Marine Fuel Stabiliser - Image
Out of stock

Liqui Moly Marine Fuel Stabiliser

£22.52 £17.95
Quicksilver 4-Stroke Outboard Oil 4 Litre - Image

Quicksilver 4-Stroke Outboard Oil 4 Litre

£51.50 £49.95
Marine 16 Diesel Bug Test Kit - Image
Out of stock

Marine 16 Diesel Bug Test Kit

£19.78 £14.95
Morris Performance plus 15W/40 Oil 5L - Image

Morris Performance plus 15W/40 Oil 5L

£68.25 £54.95
Quicksilver Quickcare Ethanol - QUICKSILVER QUICKCARE ETHANOL

Quicksilver Quickcare Ethanol

£22.95
Quicksilver 2-Stroke Premium Plus - Image

Quicksilver 2-Stroke Premium Plus

£19.95
Liqui Moly Marine Grease - Image

Liqui Moly Marine Grease

£11.95
Liqui Moly Marine Diesel Protect - Image

Liqui Moly Marine Diesel Protect

£29.95 - £49.95
Liqui Moly Marine 2T Motor Oil (2 Stroke) - Image

Liqui Moly Marine 2T Motor Oil (2 Stroke)

£12.95 - £59.95
Liqui Moly Marine Storage Fogging Oil - Image
Out of stock

Liqui Moly Marine Storage Fogging Oil

£16.24 £12.95
Enzyme Energy (Soltron) Fuel Treatment 125mls - Image
Out of stock

Enzyme Energy (Soltron) Fuel Treatment 125mls

£14.95
40%
OFF
Starbrite Premium 2 Cycle Engine Oil TC-W3 Synthetic Blend 3.78L - Image

Starbrite Premium 2 Cycle Engine Oil TC-W3 Synthetic Blend 3.78L

£57.94 £34.95
Quicksilver 4 Inb Oil - Image

Quicksilver 4 Inb Oil

£15.32 £14.95
Liqui Moly Marine Single Grade SAE 30 Engine Oil - Image

Liqui Moly Marine Single Grade SAE 30 Engine Oil

£17.82 £14.95
38%
OFF
Liqui Moly Diesel Particulate Filter Protector 250ml - Image

Liqui Moly Diesel Particulate Filter Protector 250ml

£7.95 £4.95
Quicksilver Quickleen Engine Clean - QUICKSILVER QUICKCARE ENGINE
Out of stock

Quicksilver Quickleen Engine Clean

£24.95
Wessex Chemicals Marinsed Morendo DD Fuel Additive 1 Litre - Image

Wessex Chemicals Marinsed Morendo DD Fuel Additive 1 Litre

£23.57 £22.95
LIQUI MOLY MARINE PWC OIL 10W-40 1L - Image

LIQUI MOLY MARINE PWC OIL 10W-40 1L

£12.88 £11.95
Liqui Moly Marine Multi-Spray - Image

Liqui Moly Marine Multi-Spray

£15.59 £11.95
Liqui Moly Marine Super Diesel Additive - Image

Liqui Moly Marine Super Diesel Additive

£29.35 £24.95
Liqui Moly Battery Terminal Grease Spray - Image

Liqui Moly Battery Terminal Grease Spray

£12.95