Delivery info

Free delivery on all our products which will take between 3-5 days. Next day delivery available. UK shipping only.

30 days returns

Not right for you? No problem. We offer 30 day returns please visit our returns page for help.

12 months warranty

Quality comes first and our products are designed to last which is why we offer 12 months warranty.

Castrol Magnatec (C3) Engine Oil - 5W-40 - 4ltr - HWB Car Parts

Castrol Magnatec (C3) Engine Oil - 5W-40 - 4ltr

We wont be beaten on price! See our price promise here.

Castrol Magnatec 5W-40 C3 has been specially formulated to deliver outstanding protection for the latest engines fitted with after treatment devices such as diesel particulate filters and 3 way catalysts.

This product is eligible for free UK delivery. Next day delivery available from £5.99. Same day delivery and click & collect in Swansea. Please select which delivery option is right for you at checkout. Click here for delivery info. 

Not happy with your new item? No problem. Simply send it back to us within 30 days of your purchase for a full refund. Terms & conditions apply. 


  • ACEA A3/B3/C3
  • API SN / CF
  • BMW Longlife 04
  • Meets Fiat 9.55535-S2
  • dexos2*
  • MB-Approval 229.31
  • Renault RN 0700 / RN0710
  • VW 502.00 / 505.00
  • Castrol recommends Castrol Magnatec 5W-40 C3 as suitable for use in engines requiring GM/Opel dexos2 lubricants and where GM LL-A-025 or GM LL-B-025 specified products were originally required.



Added to cart successfully!

Welcome Newcomer