Silkolene Comp 4 Stroke | Engine Oil

Product Overview

Experience advanced motorcycle engine protection with Silkolene Comp 4 Stroke Engine Oil, a premium ester-based lubricant developed for modern, high-performance four-stroke motorcycles. Combining proven ester technology with high-quality components, Comp 4 delivers outstanding lubrication, reliable wet-clutch performance and long-lasting engine protection across a wide range of riding conditions.

Engineered to provide rapid oil circulation during cold starts, Silkolene Comp 4 helps protect critical engine components from the moment the engine starts. Its advanced formulation maintains excellent lubrication under demanding operating conditions, supporting smooth transmission operation and consistent performance from everyday riding through to more intensive use.

Designed for both air-cooled and water-cooled four-stroke engines, the Comp 4 range is particularly suitable for high-performance motorcycles, tuned racing engines and machines operating in hot climates. Its excellent high-temperature viscosity characteristics help protect highly stressed components while maintaining consistent oil pressure and resistance to mechanical shear.

Silkolene Comp 4 also provides excellent stay-in-grade performance, helping the lubricant retain its intended viscosity characteristics throughout service. Long-lasting corrosion protection makes it a dependable choice for motorcycles used intermittently or stored between rides.

Available in SAE 10W-30, 10W-40 and 15W-50, with 1 litre and 4 litre options, Silkolene Comp 4 meets API SL specifications and is JASO MA2 approved. The range is designed to meet the lubrication requirements of numerous motorcycle manufacturers, with selected grades particularly recommended for certain late-model Honda motorcycles.

Key Features & Specifications

· Manufacturer: Silkolene
· Product Range: Comp 4 Stroke
· Product Type: Four-Stroke Motorcycle Engine Oil
· Lubricant Technology: Ester-Based Formulation
· Available Viscosities: SAE 10W-30, 10W-40 and 15W-50
· Available Sizes: 1 Litre and 4 Litre
· API Specification: API SL
· JASO Approval: JASO MA2
· Engine Compatibility: Air-Cooled and Water-Cooled Four-Stroke Motorcycle Engines
· Clutch Compatibility: Oil-Immersed Wet-Clutch Systems
· Cold-Start Performance: Rapid Oil Circulation
· High-Temperature Protection: Excellent Viscosity Characteristics Under Demanding Conditions
· Oil Pressure: Formulated to Maintain Consistent Oil Pressure
· Shear Stability: Excellent Resistance to Mechanical Shear
· Viscosity Retention: Excellent Stay-in-Grade Performance
· Corrosion Protection: Long-Lasting Protection During Intermittent Use
· Recommended Applications: Road Motorcycles, High-Performance Engines and Tuned Racing Engines
· Operating Conditions: Suitable for Demanding Use and Hot Climates Where the Specified Grade Is Appropriate

Available Viscosity Grades

Silkolene Comp 4 10W-30

An ester-based four-stroke motorcycle engine oil offering rapid cold-start circulation, dependable engine protection and excellent wet-clutch performance. Particularly relevant to certain late-model Honda motorcycles requiring an SAE 10W-30 lubricant of the appropriate specification.

· Viscosity: SAE 10W-30
· Available Sizes: 1 Litre and 4 Litre
· Specification: API SL / JASO MA2

Silkolene Comp 4 10W-40

A versatile ester-based lubricant developed for four-stroke motorcycles requiring SAE 10W-40 engine oil. Its balanced formulation provides effective protection for engine and transmission components while supporting consistent wet-clutch operation across varying riding conditions.

· Viscosity: SAE 10W-40
· Available Sizes: 1 Litre and 4 Litre
· Specification: API SL / JASO MA2

Silkolene Comp 4 15W-50

Developed for motorcycle engines specified to use SAE 15W-50, this ester-based formulation offers excellent high-temperature viscosity characteristics and resistance to mechanical shear. Particularly suitable for demanding operating conditions, tuned engines and hot climates where the motorcycle manufacturer recommends this viscosity grade.

· Viscosity: SAE 15W-50
· Available Sizes: 1 Litre and 4 Litre
· Specification: API SL / JASO MA2

Performance & Efficiency Benefits

Silkolene highlights the following comparative performance benefits for its advanced motorcycle lubricant technology:

· 11% Fuel Saving: Potential improvement in fuel efficiency compared with the reference lubricant used in testing.
· 18% Lower Oil Consumption: Potential reduction in lubricant consumption under the stated comparison conditions.
· 3% Improved Power: Claimed improvement in measured brake horsepower and torque under comparative testing.

Performance figures are manufacturer-supplied comparative claims and are not guaranteed results for every motorcycle. Actual results depend on engine design, operating conditions, lubricant selection and the comparison baseline.

Why Choose Silkolene Comp 4?

· Proven Ester Technology: High-quality lubricant components provide dependable protection for demanding motorcycle engines.
· Excellent Cold-Start Protection: Rapid circulation helps establish lubrication quickly after engine start-up.
· Superior Wet-Clutch Performance: Formulated to support correct clutch engagement and reliable transmission operation.
· High-Performance Capability: Suitable for tuned and highly stressed engines where the required lubricant specifications are met.
· Reliable Hot-Weather Performance: Excellent viscosity characteristics help protect engine components under elevated operating temperatures.
· Long-Term Lubricant Stability: Strong resistance to shear helps maintain consistent lubrication characteristics.
· Corrosion Resistance: Helps protect internal engine components during periods of intermittent motorcycle use.
· Recognised Motorcycle Specifications: API SL and JASO MA2 performance standards support suitability for many modern four-stroke motorcycle applications.

What's Included?

· Silkolene Comp 4 Stroke Ester-Based Motorcycle Engine Oil
· Selected SAE 10W-30, 10W-40 or 15W-50 Viscosity Grade
· Selected 1 Litre or 4 Litre Container
· Quantity: One Container in the Selected Variation

Application Instructions and Warnings

· Always consult the motorcycle manufacturer's handbook to confirm the correct engine oil viscosity and performance specification.
· Select SAE 10W-30, 10W-40 or 15W-50 according to the motorcycle manufacturer's recommendations and expected operating conditions.
· Follow the recommended oil change intervals and servicing procedures for the motorcycle.
· Check the engine oil level using the procedure specified in the motorcycle owner's manual.
· Do not overfill the engine or use an unsuitable viscosity grade.
· Store the lubricant securely with the container closed and away from excessive heat.
· Dispose of used engine oil responsibly through an appropriate recycling or waste collection facility.
· Important: Not all motorcycle engines require the same viscosity or oil specification. Confirm compatibility before use, particularly for tuned or high-performance applications.

UK Stock Items: Orders for items held in UK stock are normally dispatched within 24 hours.

For UK Mainland: Royal Mail: £5.50 and Courier £8.92

Supplier Items: Items sourced from suppliers are usually dispatched within 5–10 working days once they arrive with us.

Order Cut-Off: Orders placed before 2PM (Monday to Friday) are typically dispatched the same working day, subject to stock availability.

International Delivery: We ship worldwide. Most international orders arrive within 7 working days from dispatch, though delivery times can vary depending on destination and customs processing.

Courier Responsibility: Once an order has been dispatched, delivery timescales are determined by the courier. Tracking information will be provided where available.

Customer Responsibility: Customers must ensure safe receipt of their order. Additional charges may apply if repeated delivery attempts fail due to no one being available, or if incorrect delivery information has been supplied.