How do I change oil pan gasket


Asked by Nov 28, 2015 at 04:56 PM about the 2004 Mercury Grand Marquis

Question type: Maintenance & Repair

2004 grand Marquis 4.6l

8 Answers


First check and see if the pan can be removed while the engine is in the car. Drain the oil and then remove all the bolts that hold the pan on. Clean the mating surfaces and use a good gasket sealant sparingly on both sides of the gasket, put the gasket on the pan and then torque the bolts to the factory specification but do not over tighten. I would use blue Locktite on the bolts.

1 out of 1 people think this is helpful.

I've done this on a Ford Crown Vic, but it is a tight squeeze, I also loosened the motor mounts and lifted the engine slightly with a cherry picker. The transmission hitting the tunnel only lets you get about an inch of lift, but that made a difference in getting the pan dropped enough to replace the gasket. I have read on various Ford/Merc forums that members had replaced the oil pan gasket on 4.6's without lifting the engine. If you have a couple ramps and access to a cherry picker or hoist go for it, otherwise it shouldn't be that costly a job to farm out to a shop.

2 out of 2 people think this is helpful.

I took the pan loose already howdo I loosen moter mounts and lift engine?


The motor mount is bolted to the frame and to the engine. You will have to remove the bolts. I would remove the ones going to the engine. A cherry picker can be bought fairly cheap at Harbor Freight or you can probably rent one at a rental yard. Be safe!

1 out of 1 people think this is helpful.


1 out of 1 people think this is helpful.

Rent one, unless you think you'll have a future need to use one again then buy it. If you have the pan loose, can you get to all the gasket surface to clean it? You don't have to completely remove the pan, just get it dropped enough to get the new one on. If you do manage to get it clear, take the opportunity to clean/replace the oil pump pickup screen.


Wow, too bad nobody suggested completing the diagnosis first with tracer dye and a black light, now you can add crankshaft seals or not based on visible evidence of the leak source. We used to get the lift equipment clear by placing tools between after lifting, and after mounts clear. but you have yours apart. now you lift and turn the crank to clear journals ? its an idea that used to help with the cast iron v8. Seems best access and least cramped struggle to keep on aliftin. Then do ALL the hard to reach maintenance items.

1 out of 1 people think this is helpful.

I ended up putting a jack on pully and jacking up the moter had 2move sway bar and it was pain to get gasket on but its back together no more leaks

Your Answer

Add photo

Related Questions

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 2,551 nationwide Grand Marquis listings starting at $1,300.


Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 4,820
#2 kbro
Reputation 1,910
#3 Js08016
Reputation 1,440
View All

Related Models For Sale

Used Ford Crown Victoria"
11 Great Deals out of 1,633 listings starting at $1,950
Used Lincoln Town Car"
55 Great Deals out of 2,377 listings starting at $1,542
Used Chevrolet Impala"
948 Great Deals out of 35,753 listings starting at $700
Used Mercury Marauder"
50 listings starting at $7,300
Used Cadillac DeVille"
2,394 listings starting at $1,600
Used Ford F-150"
3,183 Great Deals out of 216,374 listings starting at $1,900
Used Honda Accord"
1,272 Great Deals out of 77,636 listings starting at $1,395
Used Ford Taurus"
358 Great Deals out of 23,065 listings starting at $1,400
Used Ford Mustang"
718 Great Deals out of 41,256 listings starting at $900
Used Toyota Camry"
1,593 Great Deals out of 98,101 listings starting at $895
Used Chrysler 300"
567 Great Deals out of 21,017 listings starting at $1,490
Used Chevrolet Tahoe"
1,056 Great Deals out of 36,219 listings starting at $1,700

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
4 Great Deals out of 45 listings starting at $4,995
2010 Mercury Grand Marquis For Sale
8 Great Deals out of 123 listings starting at $3,299
2009 Mercury Grand Marquis For Sale
3 Great Deals out of 130 listings starting at $2,995
2008 Mercury Grand Marquis For Sale
6 Great Deals out of 200 listings starting at $2,500
2007 Mercury Grand Marquis For Sale
10 Great Deals out of 205 listings starting at $1,993