Black fluid leak under driver door

lincoln

#1

My brother owns a 1993 Lincoln Towncar and it is leaking a black fluid under the driver door. It has been unusually hot this summer and we are wondering if it could be his rust proofing.


#2

Sure can, is that the kind of rustproofing material he had put on? Friend had that happen to his TR-7, except it didn’t leak on the ground, it leaked into the trunk, onto his nice sports coat.


#3

Some years back, a friend of mine noticed a black fluid leaking at the rear of his Oldsmobile Omega (a front wheel drive car). This happened Christmas day when he and his family were leaving for a trip to visit relatives. The only mechanic he could reach by telephone suggested it might be a rear strut, but there was no way he could get a replacement strut at Christmas. The family piled into their second car, a Ford Pinto, and made the trip. When the got home, they figured out the problem. Their teenage son had left a coke in the trunk. It has frozen and broken the container. While the car was inside the garage, the coke thawed and the fluid ran out a drain hole in the trunk. You might check underthe seat of your town car and see if some soft drink spilled under there.


#4

This could also be brake fluid so it would be a good idea to check the fluid resevoir.


#5

Good thought. The brake fluid might be dissolving the undercoat material and giving it a black color. I had a fuel tank leak once and the gasoline dissolved the undercoat on the gas tank and residue on the garage floor was black.


#6

Don’t the fuel lines pass under the drivers door and as mentioned above fuel leak.


#7

Typically they’ll pass through the center tunnel, but in this case it’s a really really good idea to put the car on a lift ASAP and see what can be seen.