I'd think it would be fine, fwiw Magura make the brake lever/resv.
Ai says
AI Overview +8 Magura Royal Blood (mineral oil) is highly recommended and widely used for BMW hydraulic clutch systems, specifically on Hexhead/Camhead models (2005+ K1200/1300S/R/GT) and Magura Hymec conversion systems. It acts as a durable, non-hygroscopic, biodegradable lubricant that is gentle on seals.Key Details for BMW Clutches:Fluid Type: It is a low-viscosity mineral oil, distinct from DOT brake fluid, ensuring it does not absorb water or damage paint.Compatibility: Suitable for Magura Hymec systems, HC1/HC3 master cylinders, and standard BMW hydraulic clutches.Colors/Formulations: While often blue, Magura mineral oil can be red or other colors depending on the specific product iteration, but they are generally interchangeable for clutch applications.Why Mineral Oil: BMW clutch systems require mineral oil rather than brake fluid (DOT) to prevent damage to the rubber seals in the slave cylinder.Alternatives: While Magura Royal Blood is recommended, other mineral oils like Shimano mineral oil, fork oil, or even hydraulic jack oil can be used, though专用Magura oil is optimized.Important Tips:Always check the reservoir cover, which typically specifies "mineral oil".Do not mix different colored hydraulic fluids; flush the old fluid completely when changing types.Regular bleeding is generally not necessary, unlike with DOT brake fluid system
