Mobil or Castrol

[richarda0109]

As a Merc owner for a number of years I have always used Mobil 1 in the 2 diesel Mercs that we own. Lately whilst working in Manchester I got talking to the local Merc Dealer and they said that they actually recommend "Castrol Edge". What are peoples thoughts on this?

Secondly for diesel engines is there a big difference between 5W30 and 5W40.

Cheers

Regards
Richard

[richarda0109]

Thanks for all your replies.

In the end I stayed with the tried and trusted Mobil 1. Was in my local dealership picking up some parts and I decided to ask them how much 5L of 5w30 would be - £87.00 - they are having a laugh.

Anyway yesterday I noticed that Halfords had knocked 20% off their price so bought 2 x 5L Mobil 1 5w30 for £83.50 - result.

Regards
Richard

[richarda0109]

Thanks again for your replies.

I am a Costco member and thats where I looked first of all. Costco ar doing great deals on Castrol Edge 5w40 (£30 inc vat for 4L) and also Mobil 1 5w40 (£30 inc vat for 5L). They are also doing a stonking deal on Castrol Magnatec - I think 2 x 4L for £40 inc vat

The problem I had was that I had to source 5w30 due to this DPF (Diesel Particulate Filter) hence paying the extra £20 for the Mobil 1 5w30.

Regards
Richard