On the new 5L 100% synthetic Motul 5W30 H-Tech 100Plus I bought (not for my Stagea) it says:
Formulated to enhance emission control systems' durability. seal compatibility, protection of turbocharger, piston cleanliness and E85 emulsion retention
and also:
Suitable for all gasoline engines using leaded or unleaded gasoline, E85, LPG or Autogas fuel at all driving conditions.