Castrol Edge A5/B5 5W-30 Fully Synthetic Engine Oil 20L is a fully synthetic 5W-30 engine oil from Castrol, supplied in a 20L pack. It meets ACEA A5/B5, ACEA C2, API SQ, ILSAC GF-7 and carries manufacturer approvals including STJLR.03.5003.
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 A5/B5 |
| Viscosity grade |
5W-30 |
| Oil type |
Fully Synthetic |
| Pack size |
20L canister |
| Industry specifications |
ACEA A5/B5; ACEA C2; API SQ; ILSAC GF-7 |
| Manufacturer approvals |
STJLR.03.5003 |
| Also meets or recommended for |
CHRYSLER MS 13340; CHRYSLER MS-6395 |
| Part number |
521778575 |
| Manufacturer reference |
15BAE9 |
Suitable for
Use where the vehicle manufacturer calls for STJLR.03.5003; CHRYSLER MS 13340; CHRYSLER MS-6395. Commonly used in Fiat, Alfa Romeo and Jeep, Jaguar and Land Rover 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 A5/B5: a fuel-economy specification for engines designed to run a lower viscosity oil, common on Ford, Volvo and Jaguar Land Rover.
- 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.
- 20L bulk pack for workshops and fleets, with a lower cost per litre than retail bottles.
Frequently asked questions
Is Castrol Edge A5/B5 5W-30 right for my car?
Look in your handbook or on the oil filler cap for the specification codes listed above, such as STJLR.03.5003. 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 20L 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.
