Jagdgeschwader II
... that the engines of Jagdgeschwader II could not tolerate artificial castor oil?
... that the engines of <i id="mwAnA"><b id="mwAnE"><a href="./Jagdgeschwader_II" id="mwAnI" rel="mw:WikiLink" title="Jagdgeschwader II">Jagdgeschwader II</a></b></i> could not tolerate artificial <a href="./Castor_oil#Early_aviation_and_aeromodelling" id="mwAnM" rel="mw:WikiLink" title="Castor oil">castor oil</a>?