Castrol Edge M 5W-30 Fully Synthetic Engine Oil 4L is a fully synthetic 5W-30 engine oil from Castrol, supplied in a 4L pack. It meets ACEA C3, API SN Plus, API SP, API SQ and carries manufacturer approvals including BMW Longlife-04, MB 229.31, MB 229.51.
Castrol EDGE is Castrol's flagship full synthetic range, strengthened with Titanium technology to hold its film strength under the high pressures found inside modern turbocharged engines.
Specifications at a glance
| Brand |
Castrol |
| Product |
Castrol Edge M |
| Viscosity grade |
5W-30 |
| Oil type |
Fully Synthetic |
| Pack size |
4L bottle |
| Industry specifications |
ACEA C3; API SN Plus; API SP; API SQ |
| Manufacturer approvals |
BMW Longlife-04; MB 229.31; MB 229.51; MB 229.52 |
| Also meets or recommended for |
MB 229.31 |
| Part number |
521779321 |
| Manufacturer reference |
15F6DB |
Suitable for
Use where the vehicle manufacturer calls for BMW Longlife-04; MB 229.31; MB 229.51; MB 229.52; MB 229.31. Commonly used in BMW and MINI, Mercedes-Benz 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 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 Edge M 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 4L pack covers a typical service with some left for top-ups. 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.