20% Off web site price with voucher code COMP4 4 litres £31.16 | 1 litre £7.19 Silkolene Comp 4 10w-40 is one of our most popular 4T engine oils and what's more we currently have it on offer! In addition to this offer we are also giving 15% Off all Gear Oils with voucher code GEAR15 and 15% off all K&N motorcycle filters available on our web site with voucher code KNFILTERS Got a classic hiding in your garage? If so then you may want to check out our current offer on Castrol Classic XL 20w-50 - We are giving an additional 20% off our usual web site price of £25.99 with voucher code CLASSICXL making it only £20.79 for 1 gallon (4.54 litres). Whilst we got your attention it's worth letting you all know that we now have a new and improved web site search bar making shopping at Opie Oils even easier. It's much faster and easier to use, gives faster results and better product filtering. Come and check it out for yourself and let us know what you think. That's it from us today but as always if you require any oil advice then feel free to ask. You can call us on 01209 202944 Monday - Friday 8.30am - 5.30pm, send us an email to firstname.lastname@example.org or just ask us here and we will be happy to help. - till next time oilman P.S - Until further notice we are giving Free UK Mainland Shipping on orders £50 or more. Free shipping will be automatically applied to qualifying orders at checkout, no voucher code will be required. Offer applies to standard shipping for most mainland UK addresses, some exclusions apply. Full list of carriage charges and destinations can be seen here.