according to castrol website edge 5w-40 meets MB approval specs 229.31 / 229.51 so i would say yes its ok to use
5W-30
Turbo Diesel 5W-40
10W-60
0W-30
0W-30 A5/B5
0W-40 A3/B4
5W-40
Castrol EDGE 5W-40 gives you the confidence to demand maximum engine performance from today’s higher revving, higher output engines that operate under increased pressures requiring lower viscosity oils with higher level of protection.
Available in 4 litre and 1 litre packs
Trusted to Perform
- VW
- BMW
- Audi
- MINI
- Smart
- SEAT
- FIAT
- Renault
- Škoda
- Porsche
- GM / Opel / Vauxhall
- Mercedes-Benz
When choosing oil, please refer to your owner's handbook and the product specifications shown above. May also be suitable for other vehicles.
Meets or exceeds industry specifications
- SAE 5W-40,
- ACEA A3/B3,
- A3/B4, C3,
- API SN/CF,
- VW 502 00/ 505 00,
- BMW Longlife-04,
- MB-Approval 229.31/ 229.51,
- Porsche A40,
- Renault RN0700/ RN0710,
- Meets Fiat 9.55535-S2,
- Dexos2*