Ford Super Duty (1999-2016) :: F250 - Engine Rear Main Seal Leaking


Apr 20, 2016

Changing out the rear main oil seal on my 1999 F250 Super Duty. I have a 7.3L diesel with 6 spd manual trans. with 98K miles. This past week it has developed a very slow engine oil drip where the engine meets the transfer case. Is it necessary to remove the engine or just the transmission? What does a transmission/transfer case combo weigh? What special tools would I need?

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Ford Super Duty (1999-2016) :: 2009 F250 - Rear Diff Fluid Change / Pinion Seal Leaking

I just picked up an 09 F250 a couple of weeks ago and I was planning on replacing all the fluids since I'm not sure when everything had been done in the past, but it did pull a camper 5th wheel. It has about 93000 Km/57000mi on it

One thing I noticed when reading the manual is that a rear diff fluid change is not necessary on these rear axles unless they have been submerged in water or repaired etc..

Just after I got it I noticed the pinion seal was leaking. It was fixed under warranty but the dealer did not replace the diff fluid as they said Ford will not pay for it.

My question is do you think I need to replace the diff fluid or should it still be good, given the relatively low mileage.

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Ford Super Duty (1999-2016) :: Slow Leak Coming From Rear Main Seal

If I use ATP AT-205 stop leak to stop a slow leak coming from the rear main seal, will it last a long time? And if it stopped working eventually, would adding more stop the leak again?

Also, I'm going to have the transmission out anyway, so how many hours would it probably take to just replace the seal at that point? And someone told me some seals were two halves that fit together as one, and others are just all one piece. Is that true? It would seem to me that a two piece seal like that would start leaking prematurely.

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Ford Super Duty (1999-2016) :: Rear Hub Outer Oil Seal Leaking / Replacement Part?

The rear hub outer oil seal on my 05 350 is leaking. The 350 Super Duty Twin Cab was never imported into the UAE so can I use the same seals as the Excursion or another Ford vehicle?

Failing that do we know the name and part number of a seal manufacturer whom I might be able to source from in Dubai? Ford don't make the seals them selves so there must be an alternate source for these things surely?

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Ford Super Duty (1999-2016) :: 2000 F250 - Rear Hub Seal Leak?

I have a 2000 F250 4x4 7.3 - About a month ago I drove across town and then noticed a strong hot brake smell from the rear of the truck. When I drove home about 2 hours later it was gone and didn't return until today. Today I stopped at a light with my window down and got the same hot brake smell, looked in the mirror and saw smoke coming from my drive's side rear wheel.

I carefully drove home (the smoke was now gone, all i did was cycle the parking brake release a couple of times) and pulled the wheel off. Rotor was really hot but smooth and clean. Brake caliper and pads looked great (no sign of the pads glazing or dragging, dry as a bone). The inside of the rotor was wet with oil. The brake shoes and components were soaked with the same fluid/oil.

Does this sound like a typical hub seal issue? Excuse my ignorance since I haven't had the rear hubs apart before but does the gear oil in the rear diff go into the axle tubes? I know the front tubes are dry but I didn't know if the rears are different. The amount of fluid on the brakes seems to be more than the little bit that is inside the hub. I need to pick up the parts and rent/purchase a couple of tools to replace the seal so I want to be as sure as possible that I'm on the right track...

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Infiniti - G35 :: Rear Main Seal Leaking After Engine Replaced

Last year, I had the unfortunate experience of having to get my engine replaced on a 2003 Infiniti G35 (only 121k miles, I got it used in '06, long story, I assume previous owner didn't take very good care of it). I opted to have a local mechanic find a used engine instead of paying for a rebuilt one and he was able to find one that had ~60k miles on it so I went with it. Now it's 9 months later and I have started noticing a burning oil smell while sitting in the car at a stop. I took it into a shop (not the one that replaced the engine, different tire and lube shop) and they found that the rear main seal was leaking pretty badly and that's where the smell was coming from. They don't do that kind of work so I need to take it somewhere else to get any repair done.

I feel like, if a second diagnosis also says RMS is the problem, that the shop that put in the engine should have given me a new RMS when they put in the used engine. Is it not something that would be visible and thus easily replaced when installing the new engine? If they did in fact replace it, it wouldn't possibly have failed on its own after only 8 or 9k miles, would it? I don't normally hearing about RMS problems until cars are well over 100k miles.

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Ford 6.7L Power Stroke Diesel :: Rear Main Seal Leaking Where Engine Connects To The Transmission

I haven't had time to take my truck to the dealer to actually be checked yet but it appears I might have a rear main seal going out from what I can see. I pressure washed the whole underside of my truck the other day and there is fresh oil where the engine connects to the transmission.

My truck is a 2011 with a 2013 engine in it. The truck has 103,900 miles on it. The engine has almost 60,000 miles on it. I have the extended warranty on it which is good. All this truck has to do is last 2 more lousy months and I'll replace it.

2011 Ford F-450 6.7L Diesel 12' Flatbed

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Santa Fe (CM - 2007-12) :: 2011 3.5L Engine Oil Leaking From Rear Main Seal

Newly acquired 2011 Santa Fe GL. Recently had a 2008 Azera GLS.

We received the Santa Fe a week ago and have since put 600 km on her. I took her into my work (auto mechanic) to wash and wax, looked underneath the engine and noticed 2 drops of what appeared to be engine oil. Between the transmission and engine block there are 2 10mm vertical bolts. The drops of oil have accumulated on the head of the bolts. There is a small "plate" between trans and engine with oil "weepage". My guess is the engine rear main seal is leaking! Not a small repair and certainly at 600 km.

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Ford Super Duty (1999-2016) :: 2002 F250 V10 - Oil Leaking From The Rear Of Pan

If you look at the top of the picture you can see the two bolts with fresh oil on them.

I have a 2002 Ford F250 V10 Pick up. I noticed oil leaking from under the oil pan. I wiped off the pan and bolts to see where it was coming from. The oil seems to be leaking from the rear of pan. There's always fresh oil on the rear bolts that hold the pan and I also noticed oil coming from one of the two hoses that go from the radiator to where the oil filter mounts.

But don't those hoses carry radiator fluid and not oil? I bought this truck in July and no oil leaking from underneath. It seemed to have started after I did my first oil change on it. I used regular Vavoline 5W-20 and motorcraft oil filter.

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Ford Super Duty (1999-2016) :: 2008 - Oil Leaking In Front Main?

Right after i got this truck it developed an oil leak which i thought was the front main. Turns out after a lot if degreaser and watching its not and its actually leaking from a small tube running out of the passenger side of the engine. I think its an oil cooler line but not sure. Its where the cross member is located and i cant get in there very easily or figure out how to load up pics to the site on my phone. What this line may be?

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Ford Super Duty (1999-2016) :: Front Axle Seal Leaking?

I noticed the other day after my truck was parked on a bit of a angle there was diff oil from the passenger side on the ground. reading a bit on here i learned the axle seals are way in the front housing close to the front diff. and yesterday driving a heavy load around my front brake driver side got stuck on a bit and over heated and was smoking, couldn't even touch the rim it was so hot. anyway about this axle seal i got the hub off right now but cant seem to pull out the axle assembly through the knuckle but i see i have to pry and most likely wreck that seal. Looking for a link of piuctures or how to replace the axle seals in the housing.

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Ford Super Duty (1999-2016) :: Crank Seal Leaking At 88k Miles

Just had my truck in for an oil change at dealership and wanted them to check for oil leak seeing as I started getting drops on my driveway. When I pick up the truck they told me the front crank seal was leaking and possibly the rear main seal. Front was gonna be 650 bucks and the rear was gonna be 1020. Ended up taking truck to local diesel shop and they replaced front crank seal for 300 and said the rear main looked fine. Tech also told me the old seal looked worse than some that came out of engines with 3 times as many miles. 6.4L ...

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Ford Super Duty (1999-2016) :: 2003 F250 5.4L - Axle Leaking On Passenger Side Rear Rotor And All Over

Here's my problem while replacing brake pads i found that my axle has leaked fluid on the pss,side rear rotor and all over .. I been looking for any info on repairing it myself . I found Everything for every other truck just not for this truck.

It's 2003 F-250 w/5.4L all Stock rear axle has 12 bolts and gears are 7.73 ... I believe its a Dana 60. No tags or markings on the Axle to go by..

I live in the Freak-en woods here so i like to order all the right parts once and do over the weekend .. its my only ride so once apart im stuck here.... I did check the Vent Tube its fine..

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Ford Super Duty (1999-2016) :: 2003 F250 - Leaking From Rear Of Passenger Side Head Gasket

So I've put about 1000 miles on my 03 F250 since buying it, and just the other day it's started leaking from the rear of the passenger head gasket. Enough to drip on the driveway and exhaust, and have some exhaust smell. 126,000 miles, 5.4

I've checked with my local ford dealer, and It also needs passenger exhaust manifold and studs, so the dealer price to tack that on would be a whole lot more too since there are already a couple studs broke. It would be best to get it done when the head is pulled.

I've checked with several local mechanics, and none of them are interested in pulling the head on this engine. That has me concerned about doing it myself too..especially since it fits in my garage with only a few inches to spare..

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Ford Super Duty (1999-2016) :: Right Front Axle Seal Leaking Continuously?

99, F250, 4X4, V10, 72,000 miles. I have had the front axle seals replaced three times in the past 3000 miles, and the right continues to leak. My mechanic screwed up three times?

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Ford Super Duty (1999-2016) :: 2011 F350 - Pinion Seal Leaking?

Pinion seal on my truck is leaking. At auto parts store they gave me National seal part number 4278. It does not fit it is too small.I went back and other seal they have is too big. What is the part number?

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Ford 6.7L Power Stroke Diesel :: Rear Main Oil Seal Leaking

2011 F-350 CC, 45k miles... Found out yesterday mine is leaking. Way to early for these issues to pop up.

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Ford Super Duty (1999-2016) :: Sunroof Leaking / Entire Seal Inside Is Damp

I have my 03 F350 which unfortunately has a sunroof...which now appears to be leaking. Around the entire seal inside is damp about 1/2" out into the headliner. I looked up top and didnt see anything out of the ordinary..but the back of the sunroof is flush with the roof and the front is about 1/4" down, and if you press on it...it sinks about another 1/4". My questions here are...how do i fix this leak, is there a seal that needs to be replaced? and is that play in the sunroof normal or is something wrong?

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Intrepid :: The Rear Main Seal Is Leaking

My daughter has a 2000 intrepid with i believe a 2.7 engine. the rear main seal is leaking.

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Ford Super Duty (1999-2016) :: Overfilled Transfer Case Or Leaking Transmission Output Seal

I just changed transfer case fluid on my father's F-350 for the first time in 13 years. (over 230k). Removed fill plug first and fluid gushed out of the fill hole unexpectedly. Did not have catch pan ready, so made a mess. I thought it was just over filled form the factory, but too much was coming out to be simple overfill. Almost 2 qt came out of the fill plug.

Did some google search and found many Ford trucks have failed transmission output shaft seal and transmission fluid leaks out to transfer case, causing transfer case to overfill. I am yet to check transmission fluid level, but considering how much came out of it that probably is the case.

Now, how bad of the problem this really is? Will overfilled transfer case cause some serious problem? 4x4 is rarely used (once or twice a year in winter) on this truck and from what I understand transfer case doesn't really do anything in 2WD other than just passing output from transmission through.

There are no fluid leaking outside and repairing the seal would be a too much of work for me.

Also changed rear differential fluid for the first time and I was surprised how clean the fluid was. There were thin layer of black sticky residue (sludge?) covering everything, but the fluid itself looked clean and no visible metal shavings. I guess that is why Ford said it does not require change under normal condition.

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Ford Super Duty (1999-2016) :: F350 V10 - Leaking Coolant From Rear Of Engine

My grandfathers 99 F350, started suddenly, do not know if it was while sitting or while driving. Its more of a stream than anything else. Coming from the rear, cannot see where, appears to be toward the vee of the engine, not inside the bellhousing. The firewall insulation is damp from coolant. Doesnt start until engine starts warming up.

Is there something commonly replaced back there? Didnt want to yank the intake in 20* weather for exploratory surgery. Is not the heater hoses. Idk if the EGRs are cooled on these, thats about my only idea other than freeze plug, coolant tests good down to -20ish, hasnt been below zero in weeks (prior to leak). Not familiar with any of the modular engines.

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