Video: Gratuitous R 1200 GS Engine Porn
With the 2013 R 1200 GS, BMW has done something completely new with the iconic engine: added liquid cooling. However, it\'s important to understand that this new engine is only partially cooled by the wet stuff. As demonstrated in the video above, water cooled in the GS\'s radiators is circulated through the engine\'s block, cylinders and the very bottom of the drivetrain. The rest of the engine\'s cooling is provided by good old fashioned ambient airflow.