Castrol Magnatec (C3) 5W-30 Fully Synthetic Engine Oil 1L is a fully synthetic 5W-30 engine oil from Castrol, supplied in a 1L pack. It meets ACEA C2, ACEA C3, API SP, API SQ and carries manufacturer approvals including BMW Longlife-04, FIAT 9.55535-S3, MB 229.31.
Castrol MAGNATEC contains intelligent molecules that cling to engine surfaces, so protection is in place from the moment the engine is started, when most wear takes place.
Specifications at a glance
| Brand |
Castrol |
| Product |
Castrol Magnatec (C3) |
| Viscosity grade |
5W-30 |
| Oil type |
Fully Synthetic |
| Pack size |
1L bottle |
| Industry specifications |
ACEA C2; ACEA C3; API SP; API SQ |
| Manufacturer approvals |
BMW Longlife-04; FIAT 9.55535-S3; MB 229.31; MB 229.51; MB 229.52 |
| Also meets or recommended for |
Fiat 9.55535-S3; MB 229.31; MB 229.51; MB 229.52; OPEL OV 040 1547-D30; Opel OV 040 1547-G30 |
| Part number |
521772392 |
| Manufacturer reference |
15F929 |
Suitable for
Use where the vehicle manufacturer calls for BMW Longlife-04; FIAT 9.55535-S3; MB 229.31; MB 229.51; MB 229.52; Fiat 9.55535-S3; MB 229.31; MB 229.51. Commonly used in BMW and MINI, Mercedes-Benz, Vauxhall and Opel, Fiat, Alfa Romeo and Jeep vehicles. Always confirm the grade against your owner's handbook or service schedule before use, as requirements vary between engines of the same model.
Key benefits
- Fully synthetic base oil keeps its viscosity stable from cold starts to sustained high temperatures.
- ACEA C2: a low-SAPS, fuel-economy specification that is safe for petrol and diesel particulate filters, typical of Peugeot, Citroën, Fiat and Toyota requirements.
- ACEA C3: a low-SAPS specification that protects diesel particulate filters and catalysts while keeping a higher film strength, used by BMW, Mercedes-Benz, Volkswagen Group and GM.
- API SP: the current API petrol engine category, with added protection against low-speed pre-ignition in turbocharged engines.
Frequently asked questions
Is Castrol Magnatec (C3) 5W-30 right for my car?
Look in your handbook or on the oil filler cap for the specification codes listed above, such as BMW Longlife-04. If your vehicle lists one of them, this oil meets the requirement. If you are unsure, send us your registration number and we will confirm the correct grade.
What does 5W-30 mean?
The first number (5W) describes how easily the oil flows when cold, so a lower number means easier cold starts. The second number describes the oil's thickness at normal running temperature. Always use the grade your manufacturer specifies.
How much oil will I need?
Most petrol and diesel cars take between 4 and 6 litres for a full oil change, so a 1L pack is ideal for top-ups between services. Check your handbook for the exact capacity including the filter.
Supplied sealed in the manufacturer's original packaging and dispatched from the UK by Nitroma Lubricants.