Castrol Magnatec 10w-40 A3/B4 is from the updated Castrol Magnatec range car oil, equally suitable for petrol and diesel engines and replacing the separate Magnatec 10w-40 A3/B3 and Magnatec Diesel B3 engine oils.
Magnatec 10w-40 A3/B4 combines "Intelligent Molecules" for a stronger layer of protection to maintain engine efficiency, keeping your car at its peak for longer. Tested and approved to European Automobile Constructors Association (ACEA) and American Petroleum Institute (API) specifications.
We have carriage rates to UK mainland from as little as £3.00 (inc VAT) using our saver rate on orders less than 1kg, with our most common courier rate set at £4.99 for orders of 5kg (enough for 5 litres of oil).
We've kept costs as low as we can and shipping is free for orders of £100 and over, regardless of the weight of your order.
Carriage charges are based on weight - please see our
table of carriage costs
for full details.
When placing an order with Opie Oils, we'll do all we can to get your order to you as quickly as possible. The vast majority of items are held in stock and dispatched from our UK warehouse. UK delivery will take less than 7 working days (i.e. Monday to Friday inclusive), unless we contact you to advise otherwise. In 90% of cases, delivery is made well before this, and
is also available (
Click here for more details
). In case of Bank Holidays please allow an extra working day.