Engine Oil Leak From Front Crankshaft Seal on Buick Lucerne

Problem Description and Possible Solution

An engine oil leak may develop from the front crankshaft seal. Our technicians tell us a revised front crankshaft seal is available to correct this concern.

Problem Data
RepairPal Verified
Average mileage: 52,070 (4,000–164,000)
Engines affected: 3.8L V6, 3.9L V6, 4.6L V8
6 model years affected: 2006, 2007, 2008, 2009, more2010, 2011
48 people reported this problem
Viewing 1 - 20 of 27 comments
Oil leak between the front two wheels. Dealer replaced oil pan & gasket asm plus drain plug. Leaked again 1000 miles later - replaced drain plug again. Leaking again at 10,000 miles -- will take back to dealer. "Jerry" service manager says Buick has a problem with this engine. . . now it is my problem. . .going to take this to the next level.
leaking around front crankshaft seal Haven't fixed yet leaking around oil filter housing have fixed it leaking around oil sending switch have fixed that also leaking around water pump replaced water pump now leaking around radiator cant tell where its coming from will not buy another American car again and steill owe 7 thousand
leaks since 8500 miles has been in to dealer now 7 times for the same problem, have
replaced all gaskets , oil pan etc. I think the car is a lemon
Front crank seal leaking oil...dripping on garage floor....seal replace by Buick dealer...part# 14090906...
on 08 Jan 2011..

Oil still leaking ....3-10-2014....Mileage...7816...'

another trip scheduled to dealer for 3-11-2014.....
Low oil indicator came on and said to shut off engine. Put in 1 quart of oil and happened again later. A Dye was put in oil and found oil pan leaking and Main Oils Seal, this is a dealer fix and I believe is the crankshaft seal. Have not gotten estimate yet but am expecting it to be expensive.
There is oil on the outside of the oil pan. This has been noticed since March of 2014. The dealer has not been able to find the origin of the oil that appears on the oil pan. The service department now (after many trips to them) say that the Buick V6 aluminum engines have oil seepage.
I have had the same problem, repaired a couple of years ago, probably 25,000 -30,000 miles. So many problems with this vehicle.
I purchased my used Lucerne Sept. 2013. After a 20 mile test drive to a friends auto repair store, we put it on the Hoist. I then reported back to the dealer that the car he was trying to sell me had a major oil leak, that the underside of the motor was covered with oil and that it was probably the front Crank seal. THAT made him jump. I ended up buying the car. The dealer repaired the problem under warranty, acted honorably and I ended up with a discount of $3k off their asking price and a beautiful navy blue luxury car for cheap.
Oil pan gasket replaced twice. Both times dealership put in 5 qts. of oil and then on second one, the tech put in 5 1/2 qts. Apparently he doesn't like to look up the correct amount(4 qts.). Now, again a leak and they say coming from front crankshaft seal. Still under warranty and I like this car, but this is getting ridiculous.

update of 07-30-2014: leaking again. Again, dealer replacing seals but now going back to oil pan to replace pan and gasket. Warranty still in effect for one more year or so. Will dump this vehicle prior to warranty expiration as I certainly don't want to pay for repairs. Buick has a problem but it becomes YOUR problem once the warranty runs out. They don't even make Lucerne's anymore so time to re-evaluate Buick as a car to buy. The Lacrosse is just not as good as the Lucerne is/was.
oil leaking from engine took to dealer twice..replaced oil pan gasket..oil drian plug still leaking oil
dealership change front seal did not fix problem dealership change oil pan did not fix problem still losing oil going to try a different dealership please don't take your car done Arbogast they don't do a very good job
I had my oil changed and the tech reported that I had an oil leak coming from my front crank seal. It has not been repaired yet.
Dealer just replaced crank seal at 74,000 mi. Also replaced leaking water pump. All under power train warranty.