(Bulk Saving) 5 x Quarts (4.73L) Amsoil 100% Synthetic 4T 10W40 Motorcycle Oil

    Amsoil 100% Synthetic 4T Performance Motorcycle Engine Oil is formulated to lubricate four-stroke motorcycle engines, integrated gearboxes and wet clutch systems that share a common oil supply. This Special Offer includes 5 x 946ml bottles, giving you a useful quantity for full oil changes, routine top-ups and planned servicing across multiple maintenance intervals.

    Review the key features of this motorcycle engine oil:

    • 100% Synthetic Base Oil Technology: Premium synthetic base oils are engineered with uniform molecular structure for stable lubrication, strong film retention and dependable flow across a broad temperature range, helping reduce start-up wear and maintain protection once the engine reaches full operating temperature, which supports smoother running and consistent reliability.
    • High-Temperature Thermal Stability: The formulation is designed to resist oxidation, viscosity breakdown and heat-related thickening during sustained high engine temperatures, air-cooled operation and slow-moving traffic conditions, helping the oil remain effective for longer and supporting dependable lubrication when heat levels rise.
    • Shear-Stable Viscosity Protection: Motorcycle gearboxes place heavy mechanical stress on engine oil, so shear-stable viscosity improvers help the oil retain its intended grade under repeated gear loading, which supports ongoing bearing protection, smoother gear engagement and stable performance between service intervals.
    • Wet Clutch Compatible Friction Control: The oil is blended without friction modifiers that can interfere with clutch plate grip, helping maintain clean clutch engagement, controlled pull-away and steady power transfer through the drivetrain, which gives you predictable operation in town riding and on longer runs.
    • Advanced Anti-Wear Additive System: High-pressure anti-wear chemistry helps protect cams, followers, gears, bearings and other heavily loaded internal parts from metal-to-metal contact, reducing component wear during repeated acceleration, deceleration and stop-start use, which helps preserve engine condition over time.
    • Detergency and Deposit Resistance: Cleaning additives help suspend contaminants and reduce sludge, varnish and carbon build-up around rings, valve areas and oil passages, helping internal components stay cleaner and allowing oil to circulate properly, which supports efficient running and easier maintenance.
    • Low Volatility Formula: Heat-resistant synthetic content helps reduce evaporation loss at high temperature, lowering oil consumption and helping maintain the correct oil level for longer periods, which means fewer checks and more consistent protection between changes.

    You get stable lubrication, clutch compatibility and gearbox protection from one oil developed specifically for motorcycles that place several demands on a single lubricant. The 5-bottle pack gives you practical workshop stock for scheduled servicing, seasonal maintenance and keeping spare oil ready when levels need attention. Keeping this set in your garage is a smart addition to your motorcycle setup when dependable running and straightforward maintenance matter.

    12.07.2026, 10:02:30

    Demon Tweeks was established in 1971 to service the needs of the motorsport competitor and our principals of offering top products, quality, service and rapid availability are as important to us today as they were in the very beginning. We are leaders in the supply of race wear, competition and road tuning parts for cars and bikes. Within a staff totalling over 140 is a dedicated sales team servicing upwards of 3000 telephone and online enquiries received every day from the UK and the rest of the world.

    Our impressive 140,000 sq.ft. Superstore and warehousing facility in Wrexham, North Wales allows us to carry around £7 million worth of stock at all times, over 256,000 items – more than any competitor. Our rapid despatch and no quibble money back guarantee are here to give you the customer real confidence when ordering – you can count on us!

    UK DELIVERIES
    All items for sale in our eBay store are held in stock, most being offered with FREE UK MAINLAND DELIVERY (Northern Ireland, Scottish Highlands & Islands, Isle Of Man, Isle Of Scilly, Jersey and Guernsey are not eligible for free delivery unless the item can be sent in the post). If you choose the free delivery, the item will be sent via the most cost effective means possible, i.e. Parcelforce courier or 2nd class post (you can see which in the “Postage, returns and payments” tab). Please note: We are advised by Royal Mail that items sent 2nd class post can take up to a maximum of 14 working days to be delivered.

    OVERSEAS DELIVERIES
    Using eBay’s Global Shipping Program we ship to over 100 countries worldwide — and counting! When you view the item, you’ll see the item price plus estimated shipping and import charges. Once you purchase the item, the final charges appear at checkout. That means no additional charges or surprises when your item arrives. If your parcel is lost or damaged along the way, the GSP protections and policies will cover you.

    CAN I CHANGE MY ADDRESS ONCE I'VE PLACED MY ORDER?
    Please note, we run an automated system on eBay and the address details that come through to our system from eBay are the details you input at the checkout page and this is the address that we have to ship the order to.

    I'VE ADDED A NOTE TO MY ORDER, CAN YOU VIEW IT?
    Not always. As above, because of the automated system we operate and the sheer volume of orders we get, we CANNOT guarantee that we will see any eBay notes that you add to your purchase. If it is something vital to your order, please contact us via the eBay messaging system before purchasing.

    RETURNS
    Goods deemed unsuitable or not required may be returned via eBay for a refund if they are returned to us within a 30 day period from date of original order, subject to the following and depending on reason.

    • The cost of postage and packaging to return the item to us is paid by you, the customer.
    • Items are to be returned unused and returned in their original condition & packaging.

    IMPORTANT
    All returns for items purchased via our eBay store need to be done via your purchase history within eBay by selecting the item/s you wish to return. Click on the item and then more options, request a return choosing the correct reason and we will respond and issue you a returns authorisation number and details to do so.

    We cannot accept responsibility for returned parcels which are undelivered or damaged in transit back to us. Please retain your proof of postage etc.. as you may require it in the event of a claim with your carrier.

    The easiest way to contact us is via the eBay message system.

    Business Hours:
    Monday - Friday: 8.30am - 5.00pm
    Saturday & Sunday: CLOSED
    BANK HOLIDAYS: CLOSED

    * PLEASE NOTE: Messages sent outside the working hours will be answered as quickly as possible during the next working day. Also, during periods of high demand, there may be additional delays in us responding.