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Performance Engine Oils
Castrol POWER1 4T 10W-40 Semi Synthetic 4 Stroke Motorcycle Engine Oil

Castrol POWER1 4T 10W-40 Semi Synthetic 4 Stroke Motorcycle Engine Oil


Castrol Power 1 4T 10w-40 oil - 1 Litre

1 Litre


Castrol Power 1 4T 10w-40 oil - 4 Litres

4 Litres


Castrol Power 1 4T 10w-40 oil - 20 Litres

20 Litres


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  • Description
  • Benefits
  • Specifications
  • Shipping Explained

Castrol POWER1 4T 10W-40 Semi Synthetic 4 Stroke Motorcycle Engine Oil

General Details:

OilPart Synthetic Oil
Packing TypeBottle
Oil Viscosity Classification SAE10W-40
Content [litre]4
SpecificationAPI Gasoline SN
SpecificationJASO MA-2

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Castrol POWER1 is a premium, most advanced range of engine oils designed to meet the needs of newer, more technologically advanced engines. The unique Power Release Technology™ boosts bike performance by optimising friction and enabling it to accelerate faster, providing superior acceleration at the touch of the throttle.

Castrol POWER1 4T 10W-40 (Formerly Castrol POWER1 GPS 4T 10W-40) is an advanced, premium quality, semi synthetic 4-stroke engine oil designed for high performance bikes. 

Designed to enable your bike to deliver maximum and sustained power right up to very high operating rpm thus offering a significant advantage over conventional motorcycle engine oils.

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


  • Reduced friction loss for maximum available performance thanks to Power Release Technology™
  • Optimum, combined protection of engine, gearbox and oil bath clutch
  • Prevents premature oil thickening and prevents "coupling slipping" especially for models with wet coupling
  • Catalyst-suitable


  • Semi Synthetic
  • API SN
  • JASO MA-2


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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