The only hose that goes to the dipstick is the oil drain hose from the bottom of the crankcase vent valve (cyclone valve) which is actually one of the common causes for a vacuum leak as well as an oil leak. It is #4 in this link.

RealOEM.com * BMW E53 X5 3.0i Crankcase-Ventilation/oil separator

__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama)

You make something idiotproof, they'll make a better idiot

You think professional is expensive, just wait until you pay for amateur.

Never let your sense of morals prevent you from doing what is right.

Examine what is said, not who speaks.

X5 pics

RIP 4.6is.....

2003 4.6is