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Silkolene Comp 4 20w-50 XP Ester Based Semi Synthetic Bike Engine Oil

Silkolene Comp 4 20w-50 XP Ester Based Semi Synthetic Bike Engine Oil


Silkolene Comp 4 20w-50  Synth - 1 Litre

1 Litre


Silkolene Comp 4 20w-50  Synth - 4 Litres (Lube Cube)

4 Litres (Lube Cube)


Silkolene Comp 4 20w-50  Synth - 20 Litres (Lube Cube Box)

20 Litres (Lube Cube Box)


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  • Description
  • Benefits
  • Specifications
  • Shipping Explained

Silkolene Comp 4 20w-50 XP Ester Based Semi Synthetic Bike Engine Oil

Silkolene Comp 4 20W-50 XP Synthetic Ester Based 4-Stroke Engine Oil is particularly suitable for use with tuned racing engines or high performance units being used in hot climates, the excellent high temperature viscosity characteristics of Comp 4 20W-50 help to protect highly stressed components and maintain consistent oil pressure and shear stability. It also offers excellent ‘stay-in-grade’ performance and long lasting corrosion resistance, even during periods of intermittent use.

Silkolene Comp 4 20W-50 XP is also suitable for many vintage and classic engines where monograde oils were originally specified and has been successfully used in roller bearing engines. Also ideal for larger air-cooled V Twin engines.

The New XP technology combats engine wear and friction on all critical load surfaces at high temperatures and cold starts.

The new XP range comes with many benefits:
  • Up to 11% Fuel Savings
  • Up to 3% Improved Power
  • Up to 18% Lower Oil Consumption
  • Reduced Engine Wear

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


Ester synthetics combat wear and friction on all critical load surfaces at high temperatures and during cold starts.

Electrosyntec uses electrostatic forces to bond low friction molecules to stressed metal surfaces, releasing hidden power and ensuring long-term performance retention. The exceptional stay-in-grade formulation protects engines and transmissions.


  • Specifications
    • API SG, SH & SJ
    • JASO MA


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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We say...

"Not only good in motorbikes, but ideal for many classic and vintage applications due to its shear stability."

Review Opie Oils

Review Stars

Rated Excellent