Search Button


Account Button


Basket Button

Basket Basket

Search Suggestions



View All Results

Castrol Outboard 4T Part Synthetic Outboard Engine Oil

Castrol Outboard 4T Part Synthetic Outboard Engine Oil


Castrol Outboard 4T - 1 Litre

1 Litre


Checking Stock



Add To Basket

Castrol Outboard 4T Part Synthetic Outboard Engine Oil

General Details:

Content [litre]1
Chemical PropertiesContains mineral oil
Packing TypeBottle
Oil Viscosity Classification SAE15W-40
Manufacturer ApprovalAPI Diesel CF
Manufacturer ApprovalAPI Gasoline SL
Castrol Outboard 4T is a 4 stroke boat / marine engine oil is a high performance lubricant with a part synthetic formulation which provides the highest levels of engine protection over a wide range of operating conditions. This oil has been specially designed to tackle the unique stresses and strains of a boat / marine engine, such as extended idle times to high revving cruising for long periods.

This Castrol Boat engine oil offers enhanced piston cleanliness and reduced oil consumption, excellent low temperature wear control for effective valve train protection, high resistance to viscosity losses allowing a thick oil film to be maintained over time, even in the presence of high levels of fuel dilution and good anticorrosion properties for safe protection during winter storage.

Castrol Outboard 4T has been designed for all 4 stroke outboard engines from major Japanese and American manufacturers.


  • Part synthetic formulation
  • Highest levels of engine protection
  • Enhanced piston cleanliness
  • Reduced oil consumption
  • Excellent low temperature wear
  • Valve train protection
  • Anticorrosion properties
  • Safe protection during winter storage


  • API SL
  • API CF

PDF Downloads:

Download the Technical PDFDownload the Safety PDF

Share this product:

Find Oils & Parts

Use Our Product Lookup

We say...

"Synthetic Based 4T Boating Engine Oil"