Bimmerfest - BMW Forums - View Single Post - decent sized oil leak
View Single Post
Old 11-09-2012, 06:32 PM
Zeichen311's Avatar
Zeichen311 Zeichen311 is offline
Lost but making good time
Location: Here, there or in transit
Join Date: Mar 2011
Posts: 4,107
Mein Auto: '11 335xi 4dr; '03 330Ci
Are you sure oil is leaking from the line and not merely dripping steadily onto the line from some other source? If the line in question runs from the transmission to its cooler it will be filled with transmission fluid, not oil. The former usually looks, feels and smells quite different from engine oil. (The insulation may be as much to prevent damage from chafing or other contact as for heat control.)

Wild but experienced guess: Oil leak on the right side of a six-year-old BMW I6 fairly screams "valve cover gasket." If it is indeed oil, follow that line and look for leaks above it along its entire length. You may have had a steady drip onto the foam for some time that eventually saturated it through capillary action.
2011 335xi Individual 6MT - Azurite Black Metallic / Oyster & Black / Anthracite Maple + all the good stuff
2003 330Ci Sport 5MT - Black Sapphire Metallic / Natural Brown / Myrtle + the important stuff

   N47 35' 30.13" E11 10' 33.36" - End of can guess what came next. BMW CCA
Reply With Quote