dripping anti-freeze

My 06 750I is leaking anti-freeze like a cow that hasn't been milked all day! I have no idea where it is coming from, as when I look under the hood all the hoses I can see are fine, and I have no idea what else it could be. Everytime after driving(15 miles or so) I have a puddle of anti-freeze thats big enough for a family of goldfish to survive in. Any ideas?

check the lower rad hose the sensor o ring usually goes.

Originally Posted by 1bad540

check the lower rad hose the sensor o ring usually goes.

Where are they located? will I have to take covers off?

Could be a wheep hole as well
Or hoses, waterpump, expansion tank

underneath the car.

I had the same issue, mines was the O ring sensor on the lower rad hose like @1bad540 stated. The part cost me $43 and installation $70! I love this forum.

Originally Posted by BMW750IMMIA

My 06 750I is leaking anti-freeze like a cow that hasn't been milked all day! I have no idea where it is coming from, as when I look under the hood all the hoses I can see are fine, and I have no idea what else it could be. Everytime after driving(15 miles or so) I have a puddle of anti-freeze thats big enough for a family of goldfish to survive in. Any ideas?

Sorry to hear that...check this link out

http://www.bimmerfest.com/forums/sho...d.php?t=651616

Also remove the 6 bolts on the engine cover an right in front of the throttle body is a 3 prong plugs. Make sure its not leaking.

I didn't have a leak but just replaced the o-ring when I flushed the coolant as a preventative method. It costs $3 at HomeDepot.

Thank you for all that helped! Of course, you were right. However you figured out it was that exact part out of the 228,836 in this car, I give you props.