Sign In
Car Service Parts & KitsCar BrakesEngine PartsSuspension & SteeringCar Transmission PartsCooling and HeatingCar Electrics and Car LightingBody & Exhaust PartsCar Lubricants and Fluids
In-Car TechCar Cleaning AccessoriesCar AccessoriesCar Transmission Oils, Lubricants & FluidsCar MaintenanceCar ComponentsCar Security Accessories & EquipmentWinter EssentialsSummer Essentials
Performance Car Parts & Styling

Best Price Guarantee

Free Standard UK Delivery over £30*

250+ Collection Points

Excellent on Trustpilot

EASTER SALE! Save 24% off Car Parts with Code EASTER24. Apply code at checkout. Ends 29.04.2025. T&C's apply

Castrol Magnatec C3 Engine Oil - 5W-30 - 4ltr
£48.49
Castrol Magnatec C3 Engine Oil - 5W-30 - 4ltr
Castrol Magnatec C3 Engine Oil - 5W-30 - 4ltr
Castrol

Castrol Magnatec C3 Engine Oil - 5W-30 - 4ltr

521772391
Available
Add postcode to check availability
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
£48.49
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Check product compatibility

Enter your reg or select your vehicle to check product compatibility

or
Please wait a short moment whilst we retrieve your vehicle details.
Product details

Castrol Magnatec C3 Engine Oil - 5W-30 - 4ltr

Busy driving, reinvented. Non-stop protection from every start, even for vehicles with modern stop-start engine technology.

All cars, even those with the latest stop-start engine technology don’t perform at their best in traffic congestion. And congestion has dramatically increased over the past 10 years, causing engine wear and wasting fuel.

That’s why we created new Castrol MAGNATEC STOP-START, combining DUALOCK molecule technology with Castrol’s most efficient full synthetic base oils.

  • Forms a powerful force-field of wear protection
  • Dramatically reduces both warm-up1 and stop-start2 wear by 50%
  • mproved fuel economy3

    Castrol MAGNATEC STOP-START 5W-30 C3 is tested in Hybrid*.

  • 1 Tested versus the Sequence IVA API SN wear limit.
  • 2 Tested versus the CEC OM646LA ACEA wear limits.
  • 3 Compared to an industry reference 15W-40 oil.
    * Toyota Prius, EPA NYCC.

  • Application
  • Castrol MAGNATEC STOP-START 5W-30 C3 is suitable for use in automotive gasoline and diesel vehicles where the manufacturer recommends an ACEA C3, API SN 5W-30 lubricant.
  • Castrol MAGNATEC STOP-START 5W-30 C3 is approved for use in vehicles from leading manufacturers, please refer to your owner's handbook.
  • Performance Claims
  • ACEA C3
  • API SN
  • BMW Longlife-04
  • Meets Fiat 9.55535-S3
  • MB-Approval 226.5/ 229.31/ 229.51
  • Renault RN 0700 / RN 0710
    • Specifications
    ACEA
    C3
    Categories
    Engine Oils
    Grade
    5W-30
    Manufacturer Specification
    VW 505.00
    Oil Type
    Fully Synthetic
    Range
    Castrol Magnatec Start Stop
    Size Ltr
    4 Litre
    Delivery & Returns
    Reviews
    0% Finance Available on purchases over £99. Subject to status. Terms and Conditions Apply.

    0% interest for 4 months on purchases over £99

    Balances after this period or transactions under £99 are charged interest at the standard variable rate. The minimum payment due still applies to 0% offer balances. Any remaining balance due after the 4-month promotional period or any transactions under £99.00 will be charged interest at 23.9% p.a. (variable). In order to maintain the 0% offer, you need to keep up monthly repayments and stay within your credit limit.

    Help