Castrol Magnatec 5W30 C3 Oil 4 Litre



Fitted bundle deal

includes Accessories + Fitting

Item: 224209

Castrol Magnatec 5W30 C3 Oil 4 Litre


(Unit price: £8.75 per litre)


How can I get it?

FREE Click & Collect

We'll top up your oil
Simply add fitting when asked at checkout











  • Description
  • Specification
  • Reviews
  • Delivery Options
  • Help & Advice
  • Buying Options
  • Castrol Magnatec 5W30 C3 Oil 4 Litre

    Magnatec 5W-30 A3 B3/B4 uses less fuel compared to other oils, allowing you to drive more miles - up to 370 miles a year further *. Plus your engine will also benefit from Castrol Magnatec's Intelligent Molecules, clinging to your engine and forming an extra layer that protects from the start. Keep your car at its peak for longer:

    Castrol Magnatec 5W30 C3 Oil 4 Litre Extra Info

    • Clings to your engine forming an extra layer that protects from start up
    • Provides more protection than other oils during the critical start up period
    • Bonds to metal surfaces making engine parts more resistant to wear
    • Provides superior performance under extreme cold start up conditions

    Meets Specifications

    • API SL CF
    • ACEA A3 B3/B4
    • Vauxhall GM-LL-A-025 GM-LL-B-025
    • BMW LL-98 LL-01
    • VW 501.01 502.00 505.00
    • Renault RN0700

    Additional Information

    Please refer to your vehicle handbook to confirm the suitability of this oil for your vehicle

    *data based on 5W grades vs a 15W-40 in Industry approved test

    NOTE: 5W-30 oil is only suitable for cars that can use an ACEA A3 B3/B4 fuel efficient product. Please consult the vehicle handbook to confirm the oils suitability.

  • Grade: 5W/30
    Oil Type: Fully Synthetic Oil
    Petrol/Diesel: Both
    Size: 4 Litres
    Engine Diesel: Yes
    Engine Petrol: Yes
    Size (litres): 4
  • Castrol Magnatec 5W30 C3 Oil 4 Litre is rated 4.9 out of 5 by 48.
    Rated 5 out of 5 by from Great Quality great oil, does what it says in the container, highly recommend, best price was at Halfords
    Date published: 2017-09-27
    Rated 5 out of 5 by from Perfect quality for 5W30 C3 I purchased the 5W30 C3 oil + an oil filter at Halforeds Galway store (near the Galway shopphing center) and changed the oil for my 2008 Toyota Yaris . Price is not cheap, but after changing oil for my car, the car runs perfectly. It was the first time I changed the engine oil for a car. It took me 40 minutes for changing the oil (most of time was for waiting the old oil inside the engine to drain out completely). I will use 5W30 C3 for my car lifetime. Hung
    Date published: 2017-01-16
    Rated 5 out of 5 by from Castrol oil Its engine oil!, what else can I say?. Must review the 36mm socket I also click & collected but found out when I went to undo my oil filter it was too small & a 35mm!, teach me a lesson & make sure I check the size before I leave the store in future!.
    Date published: 2016-10-21
    Rated 5 out of 5 by from Engine oil Good quality oil, should also come in 5ltrs, car seems to be running much better after oil and filter change. Recommend it highly if it's acceptable for your engine.
    Date published: 2016-08-11
    Rated 5 out of 5 by from Quality product This quality product is even better value when bought in a bigger size. The easy grip and pour bottle make light work of the task. I recommend this oil.
    Date published: 2016-05-28
    Rated 5 out of 5 by from Excellent quality oil as always Direct replacement for most Vauxhall C3 oils, making a noticeable difference to the standard stuff in terms of smoothness, quietness when cold and improving mpg. Also protects the engine better when doing lots of short runs.
    Date published: 2016-03-06
    Rated 5 out of 5 by from Over all the best Castrol Magnatec is the best one I have used so far. The performance was a good experience. Will recommend it.
    Date published: 2014-12-10
    Rated 5 out of 5 by from Great Product I bought this product as it was recommend in the store and by my car maker. It is great and does as it says on the tin. Would recommend any BMW or Mini driver to give this a try.
    Date published: 2014-04-03
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    • clientName_halfords
  • UK Delivery

    £3.99 Delivery available on orders under £40 placed by 8pm*

    Please allow 3-5 working days for delivery. Your delivery date will be communicated at checkout.


    UK Delivery

    FREE Click & Collect - you can reserve an item online and pick it up from a store of your choice

    Simply enter your Postcode on the product page to check availability, and select Click & Collect at checkout. What's more, you pay for your items on collection. Click here to learn more.

    Items in stock - collect from 1 hour
    If your item is in stock at your chosen store, you can collect it from one hour after ordering online. We'll hold your item in-store for seven days.

    Items not in stock
    Please allow 3-5 working days for collection. We'll text you to let you know when your item are ready to collect. We'll hold your item in store for seven days. All delivery times will be shown during checkout.


  • You can buy this product from one of our carefully selected Approved Partners. The full list of options available are below. Simply add your chosen option to your basket and proceed to checkout when you're ready.

    You can purchase products supplied by Halfords and selected other suppliers on

    Checkout is always via and all payment will be taken via In checkout the products will be split into separate deliveries for each supplier.

    Showing 1 - X of our buying options
    Price Seller Info Purchase

Some of the parts we sell here at Halfords have been reconditioned. These will carry a Refundable Deposit or an extra surcharge amount. When you add one of these reconditioned items to your basket, we'll add this extra cost automatically.

Once you've sent us your old item we'll check it over, and then refund you the full surcharge as long as everything is ok.

Before you return your old unit please make sure it's in re-serviceable condition. So if you're returning caliper casings, you'll need to double check they aren't badly damaged or broken. If the part you've sent is found to be unserviceable, we reserve the right not to refund the surcharge.

Please note that if you're returning your old unit to our National Returns Centre then this will be at your own expense.

Castrol Engine Oil

Castrol Magnatec 5W30 C3 Oil 4 Litre

£35 Castrol Magnatec 5W30 C3 Oil 4 Litre combining Intelligent Molecules and fully synthetic technology