Originally Posted By: kschachn
Originally Posted By: Ether
I know that,i am simply relaying the info i received from Total
They are making that up then, or don't know what they are talking about. LL-04 is not a "higher" spec than LL-01, not in the sense that it is "better" or more desirable.
And it is not backwards compatible, that is not correct. They are two different specifications, one doesn't supersede the other one.
Actually LL4 could be stricter specification as it is based upon ACEA C3 spec that is superior to the A3/B4.
Anyway, that's what OEMs and ACEA say. LL04 is not a diesel spec, petrol BMW and MINI cars are specified to use them.
It may be diesel spec in NA but certainly is not in EU. It can be used where LL01 was original recommendation.