BP Ultimate Diesel - ACTIVE Technology - the_bandit

For those interested, BPs latest incarnation of Ultimate Diesel no longer guarantees a minimum cetane number of 55, with typical values between 58-60. Instead it meets BSEN590 standard of min 51.

For those not interested don't bomb this topic!

BP Ultimate Diesel - ACTIVE Technology - Brit_in_Germany

Any information about your source?

BP Ultimate Diesel - ACTIVE Technology - the_bandit
Source is BP Customer Services via email reply to a question I submitted.

BP Ultimate Diesel - ACTIVE Technology - brum

I don't think you can read too much into information supplied by customer services. They are probably trained to give standard, legally compliant replies. EN standard dictates a minimum cetane, but ultimate may still be above their standard diesel. One thing I am aware of is that cetane improvers of the kind BP chuck into their product, deteriorate rapidly with age and as very few customers buy ultimate nowadays, it stays in the forecourt tanks a long time and BP probably realise a lot of customers end up buying old diesel that has very little cetane boost from standard.