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 56 results

Marine 16 Diesel Fuel Complete - Image

Marine 16 Diesel Fuel Complete

£26.95
Liqui Moly Marine 4T Motor Oil - 10W-30

Liqui Moly Marine 4T Motor Oil

£17.95 - £69.95
Marine 16 Diesel Bug Fuel Treatment 100ml - Image

Marine 16 Diesel Bug Fuel Treatment 100ml

£14.38 £12.95
Star Tron Diesel Additive - Image

Star Tron Diesel Additive

£24.95 - £64.95
Fuel Set - Fuel Conditioner - Image

Fuel Set – Fuel Conditioner

£31.50 £29.95
Marine 16 Diesel Bug Treatment 500ml - Image

Marine 16 Diesel Bug Treatment 500ml

£51.11 £44.95
Quicksilver 2-Stroke Oil - New Image

Quicksilver 2-Stroke Oil

£16.95
Quicksilver 2-Stroke Oil 4L 30 - Image

Quicksilver 2-Stroke Oil 4L 30

£64.95 £49.95
Enzyme Energy (Soltron) Fuel Treatment 500ml - Image
Out of stock

Enzyme Energy (Soltron) Fuel Treatment 500ml

£59.95 £54.95
Quicksilver 4-Stroke Outboard Oil 4 Litre 10w-30 - Image

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

£55.08 £54.95
Quicksilver 4 Stroke Outboard Oil 1ltr - New Image

Quicksilver 4 Stroke Outboard Oil 1ltr

£18.73 £17.95
Quicksilver Premium 2-Stroke Oil 4L 30 - Image

Quicksilver Premium 2-Stroke Oil 4L 30

£47.95
Quicksilver Corrosion Guard - Image

Quicksilver Corrosion Guard

£25.95
Quicksilver Diesel Oil - New Image

Quicksilver Diesel Oil

£47.70 £46.95
Morris Performance plus 15W/40 Oil 5L - Image

Morris Performance plus 15W/40 Oil 5L

£68.25 £54.95
Quicksilver 4-Stroke Outboard Oil 4 Litre - Image

Quicksilver 4-Stroke Outboard Oil 4 Litre

£51.50 £49.95
Quicksilver Quickleen Engine Clean - QUICKSILVER QUICKCARE ENGINE

Quicksilver Quickleen Engine Clean

£24.95
Liqui Moly Marine Grease - Image

Liqui Moly Marine Grease

£11.95
Quicksilver Quickstor Fuel Stabiliser 355ml - Image

Quicksilver Quickstor Fuel Stabiliser 355ml

£24.95
Quicksilver 2-Stroke Premium Plus - Image

Quicksilver 2-Stroke Premium Plus

£19.95
Marine 16 Diesel Bug Test Kit - Image

Marine 16 Diesel Bug Test Kit

£19.78 £14.95
Liqui Moly Marine ATF - Image

Liqui Moly Marine ATF

£14.74 £11.95
Quicksilver Quickcare Ethanol - QUICKSILVER QUICKCARE ETHANOL

Quicksilver Quickcare Ethanol

£22.95
34%
OFF
Starbrite Super Premium 2 Cycle Engine Oil TC-W3 Synthetic Blend 3.78L - Image

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

£60.66 £39.95
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

£13.37 £11.95
37%
OFF
Starbrite Super Premium Heavy Duty Motor Oil 15w40 950ml - Image

Starbrite Super Premium Heavy Duty Motor Oil 15w40 950ml

£15.91 £9.95
Morris Golden Film 10w-40 oil - MORRIS GOLDEN FILM SAE 10W/40

Morris Golden Film 10w-40 oil

£48.10 £47.95
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 Super Diesel Additive - Image

Liqui Moly Marine Super Diesel Additive

£29.35 £24.95
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 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