I use a rubber glove over the oil filler hole. Cut a tip of a finger off and tape the hose onto it, then rubber band the glove to the filler neck. Good luck!

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2004 X5 4.4 Build 01/04 Alpine White on Schwarz Dakota Leather, Anthracite Headliner
Xtrons Android HU, SPORT PKG, COLD WEATHER PKG(W/REAR HEATED SEATS AND HEATED STEERING WHEEL), CONVENIENCE PKG, FACTORY HITCH