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Motul Inboard Tech 4T 15w-50 4 Stroke Marine Boat Engine Oil

Motul Inboard Tech 4T 15w-50 4 Stroke Marine Boat Engine Oil


Motul Inboard Tech 4T 15w-50 - 2 Litres

2 Litres


Motul Inboard Tech 4T 15w-50 - 5 Litres

5 Litres


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  • Description
  • Benefits
  • Specifications
  • Shipping Explained

Motul Inboard Tech 4T 15w-50 4 Stroke Marine Boat Engine Oil

General Details:

Content [litre]5
Packing TypeTin
SAE viscosity class15W-40

Addtional Images:

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Motul Inboard Tech 4T 15w-50 is a Technosynthese® lubricant for 4-stroke inboard petrol marine engines. Reinforced with synthetic base stocks to provide outstanding resistance at high temperatures, easier flowing at cold temperatures and increased engine life time.


Specially designed for petrol inboard 4 stroke engines, including Crusader, Mercruiser, Volvo Penta and Yamaha.

Also suitable for diesel inboard engines, turbocharged or not.

Note: This oil can be mixed with synthetic or mineral oils.

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


  • Reinforced with synthetic base stocks to increase engine life time
  • Provides outstanding resistance at high temperatures
  • Easier flowing at cold temperatures
  • Anti-corrosion additives protect against corrosion from moisture and salt
  • Neutralises acid combustion residues from fuel
  • Prevents emulsion with water
  • High detergency and dispersive properties to improve engine cleanliness and prevent deposit build ups on pistons and into engine sump
  • SAE 50 grade at hot temperature for severe conditions and warm climates
  • Anti-oxidant and anti-foam properties


  • API SH / SG / CD


SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £5.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

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