http://www.pzlqs.com/Tech/Pdsheet/QuakerState/EngineOils/pdf/QHorsepowerFullSynthetic.pdf
I have been looking for this and today it came up on the QS site.
Aside from the 10W60 which by it's very grade stands out, the spec's on the 5W40 put this in the "Euro" class.
ACEA A3/B3/B4-04. Porsche, Ferrari, Maserati approved, pending approvals for MB 229.5, BMW LL-01, VW 502/503.01
Lower weights now meet ~ same Euro spec's as (non-Euro) PP.
I 'suspect' the base stock on Q-HorsePower was changed to be consistent with PP.
I have been looking for this and today it came up on the QS site.
Aside from the 10W60 which by it's very grade stands out, the spec's on the 5W40 put this in the "Euro" class.
ACEA A3/B3/B4-04. Porsche, Ferrari, Maserati approved, pending approvals for MB 229.5, BMW LL-01, VW 502/503.01
Lower weights now meet ~ same Euro spec's as (non-Euro) PP.
I 'suspect' the base stock on Q-HorsePower was changed to be consistent with PP.