Originally Posted by nthach
Originally Posted by BMWTurboDzl
Edit: btw..some euro makes use Japanese manufactured/designed turbos.
Yep - Ferrari and IHI are long time partners, Mercedes also uses IHI, Volvo uses Mitsu turbos.
My feeling unless it's to meet EU GHG regulations(which is why VW and BMW are using thinner oils), thicker oil is a fact of life in Europe due to driving style and other differences between the continents.
Japanese and American driving are quite similar, which is why Japan is a member state of ILSAC.
BMW used Mitsubishi turbos, in some models, in others Borg-Warner etc. It depends what manufacturer wants and some companies are having some specialization in certain aspects that might fit that particular engine and goal.